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If your child is heading into Year 12 — or you are the Year 12 student reading this — the ATAR is the number that quietly shapes a year of decisions: which subjects to keep, how hard to push, and which university courses are realistic. The mechanics behind it can feel mysterious, but they aren't.
Quick answer. The Australian Tertiary Admission Rank (ATAR) is a percentile rank between 0.00 and 99.95 that tells universities where a student sits relative to their state-wide age cohort. To produce it, each state takes a student's raw subject marks, scales them up or down based on how strong each subject's cohort was that year, adds the best scaled marks together to form an aggregate, and then ranks every student in the state by aggregate. An ATAR of 80.00 means a student finished ahead of 80% of their age group.
Below, we walk through every stage of the calculation and then cover how each state and territory applies the rules — including the differences in how Victoria handles study scores, how NSW bands its units, and what Queensland did when it switched to its current ATAR system in 2020.
What is the ATAR and how does it differ from a mark out of 100?
The ATAR is not a mark or a score — it's a rank. Specifically, it's a number between 0.00 and 99.95, in 0.05 increments, that tells universities where a student sits compared to every other student in their state-wide age cohort (every 16-to-20-year-old, not just Year 12 students).
An ATAR of 80.00 means the student finished in the top 20% of their age cohort. An ATAR of 99.95 — the highest possible — means the top 0.05%. The lowest ATAR most centres report is 30.00; below that, students receive a "less than 30" notation rather than a specific number. The ATAR is calculated by the state's tertiary admissions centre — UAC in NSW and the ACT, VTAC in Victoria, QTAC in Queensland, TISC in WA, SATAC in South Australia and the Northern Territory, and the University of Tasmania for TCE students.
Every state uses the same end-result definition (a percentile rank between 0 and 99.95) but each state's senior secondary system feeds in different inputs — VCE study scores, HSC marks, QCE results, WACE scores, SACE results — which is why the calculation differs in the middle.
How does subject scaling work in the ATAR?
Scaling adjusts each student's raw subject marks up or down based on how strong that subject's cohort was that year. The principle is simple: a 75 in a subject taken mostly by high-performing students is worth more than a 75 in a subject where the cohort was, on average, less academically strong. Without scaling, students would game the system by choosing easier subjects.
The state's tertiary admissions centre measures cohort strength by looking at how the same students who took your subject performed across all their other subjects. If a Specialist Mathematics cohort earned high marks across the board in their other subjects, the admissions centre treats Specialist Mathematics as a strong-cohort subject and scales the raw marks up. If a subject's cohort under-performed in their other subjects, the raw marks scale down. The scaled mark is what feeds into the ATAR, not the raw mark you saw on your report.
Scaling factors are recalculated every year — they are not fixed. A subject that scaled up sharply one year may scale up less the next year if its cohort changed. This is why teachers tell students to choose subjects you can do well in, not subjects with a reputation for scaling well — a strong mark in a subject that scales modestly almost always beats a mediocre mark in a subject that scales aggressively. For a deeper explanation of the threshold marks, our guide to what aggregate you need for an ATAR above 90 works through the scaled-mark sums in NSW and Victoria specifically.
What is the difference between a study score and an ATAR?
The two numbers get conflated, but they measure different things at different stages.
A study score (in Victoria) or a scaled HSC mark (in NSW) is a per-subject ranking that compares a student to every other student who took that same subject. Victorian study scores run from 0 to 50, with 30 representing the median. A study score of 40 means the student finished in roughly the top 9% of students who took that subject. NSW reports scaled marks per subject on a similar percentile-aware basis.
The ATAR sits a layer above the per-subject scores. It takes a student's best scaled subject marks, adds them together to form an aggregate, and ranks that aggregate against every other student's aggregate state-wide. So a study score answers "how did I do in this one subject", and the ATAR answers "how did I do across my best subjects, compared to every other Year 12 in the state".
The practical implication: a strong study score in one subject doesn't guarantee a strong ATAR if the rest of the subjects are weak. Conversely, consistently solid scaled marks across five or six subjects tend to produce a higher ATAR than a single brilliant result with mediocre everything else.
How does the aggregate work and why does it matter?
The aggregate is the sum of a student's best scaled marks, calculated according to the state's specific formula. It's the number that gets ranked against every other student in the state to produce the ATAR.
In New South Wales, the aggregate is the sum of scaled marks across 10 units of ATAR-eligible courses — the best two units of English plus the best eight other units. Most subjects are 2-unit courses, so the typical NSW aggregate draws on five subjects in total. The maximum NSW aggregate is 500.00.
In Victoria, the aggregate is the scaled study score for the student's best English subject, plus the scaled study scores for the next three best subjects, plus 10% of the scaled study scores for the fifth and sixth best subjects (if applicable). The maximum Victorian aggregate is 210.00.
In Queensland, the aggregate (called the Tertiary Entrance Aggregate) is built from the combination of five scaled subjects that yields the highest mark — five general subjects, or four general subjects plus one applied subject, or four general subjects plus a Certificate III VET qualification.
The reason aggregate-vs-ATAR matters: the ATAR is your rank, which depends on the entire state's aggregates that year, not on hitting a specific aggregate target. The same aggregate score can produce slightly different ATARs in different years because the cohort changes. Universities make admissions decisions based on the ATAR rank, not the underlying aggregate.
How is the ATAR calculated in New South Wales?
In NSW, the ATAR is calculated by the Universities Admissions Centre (UAC). It is based on an aggregate of scaled marks in 10 units of ATAR-eligible courses, made up of:
- The best 2 units of English (mandatory — every NSW ATAR includes English)
- The best 8 other units, including no more than 2 units of Category B subjects (most VET-equivalent and applied subjects)
UAC scales each subject's raw HSC marks based on the academic strength of the cohort that took that subject in that year. Most subjects are 2-unit courses, so the typical NSW ATAR draws on five subjects' worth of scaled marks. The maximum aggregate is 500.00, which converts to an ATAR of 99.95. For students aiming high, our explainer on what aggregate is needed for an ATAR above 90 works through the threshold for HSC students specifically.
How is the ATAR calculated in Victoria?
In Victoria, the ATAR is calculated by the Victorian Tertiary Admissions Centre (VTAC). The Victorian system runs on study scores: each VCE subject produces a scaled study score from 0 to 50, with 30 as the median. The ATAR is built on an aggregate of:
- The scaled study score for the student's best English subject (English, English Language, English as an Additional Language, or Literature)
- The scaled study scores for the next three best subjects
- 10% of the scaled study scores for the fifth and sixth best subjects (if applicable)
The maximum Victorian aggregate is 210.00, which corresponds to an ATAR of 99.95. Victoria's tight reliance on study scores means a strong study score in English is structurally important — it's the one subject every Victorian ATAR must include. For students struggling with subject choice, our walk-through of how to achieve your dream ATAR covers how to load the four-best slot deliberately.
How is the ATAR calculated in Queensland?
Queensland switched to a fully scaled, aggregate-based ATAR in 2020 with the introduction of the Queensland Certificate of Education (QCE). Before then, Queensland used an Overall Position (OP) instead. The ATAR is now calculated by the Queensland Tertiary Admissions Centre (QTAC) based on the combination of scaled results that produces the highest aggregate, drawn from one of the following:
- 5 general subjects (Units 3 and 4)
- 4 general subjects plus 1 applied subject (both at Units 3 and 4)
- 4 general subjects (Units 3 and 4) plus 1 VET qualification at Certificate III or higher
QTAC selects whichever combination yields the highest aggregate for that student — a student doesn't have to nominate the combination in advance. For Queensland students considering specific university pathways, our breakdown of ATAR for engineering covers QTAC-relevant cut-offs.
How is the ATAR calculated in Western Australia?
In WA, the ATAR is calculated by the Tertiary Institutions Service Centre (TISC). The Western Australian aggregate, called the Tertiary Entrance Aggregate (TEA), is calculated as:
- The student's best four scaled subject scores from courses completed in the past five years
- Plus 10% of the next best scaled score in Mathematics Methods, Mathematics Specialist, or any Language Other Than English (LOTE) — the LOTE/maths bonus
WA students need at least four scaled scores for an ATAR to be calculated at all. The maximum TEA is 430.00, including the LOTE/maths bonus. WA's bonus structure rewards students who keep advanced mathematics or a language in their subject load through Year 12.
How is the ATAR calculated in South Australia and the Northern Territory?
South Australia and the Northern Territory share a tertiary admissions centre — the South Australian Tertiary Admissions Centre (SATAC) — and run the same SACE / NTCET certificate. To be eligible for an ATAR in either jurisdiction, a student must complete:
- The Personal Learning Plan (Stage 1)
- A Stage 1 or Stage 2 mathematics subject
- A Stage 1 or Stage 2 English subject
- A Stage 2 Research Project
- Plus 150 additional credits, with at least 60 at Stage 2
SATAC then takes the student's best three Stage 2 TAS (Tertiary Admission Subjects) scaled scores, plus the best outcome from a flexible option (a fourth TAS, a half of a fourth TAS, or a Recognised Subject), to form the aggregate. The maximum aggregate is 90.00, which corresponds to an ATAR of 99.95.
How is the ATAR calculated in the ACT and Tasmania?
In the Australian Capital Territory, the ATAR is calculated jointly by the ACT Board of Senior Secondary Studies and UAC. The ACT aggregate is the sum of:
- The student's three best scaled scores from major courses
- 60% of the next best major or minor course
In Tasmania, the ATAR is calculated by the Office of Tasmanian Assessment, Standards and Certification (TASC) for students completing the Tasmanian Certificate of Education (TCE). The TCE aggregate is the sum of the student's five best pre-tertiary subject scores, three of which must come from the student's final year of study.
Why is my ATAR lower than my expected percentage mark?
This is the most common shock for students opening their results: a Year 12 final mark of 80% in each subject does not produce an ATAR of 80. The reason is that the ATAR is a rank against the cohort, not a percentage of the maximum mark.
Two effects drive the gap. First, scaling adjusts your raw mark before it enters the aggregate — a raw 80 in a moderately-scaled subject might enter as 73 once scaled, simply because the cohort that took that subject was, on average, less academically strong. Second, the ATAR ranks you against students who, by definition, also worked hard in Year 12 — the cohort is self-selected for effort. Earning the top 20% of that cohort is harder than earning 80% on a generic test.
The relationship between marks and ATAR also runs steeper at the top end. The difference between an ATAR of 95 and 99 might be 10 raw marks across the board; the difference between 99 and 99.95 might be just two or three. This is why students aiming for selective courses — medicine, law, the top engineering streams — focus on consistency across every subject, not on one outlier result. For specific course thresholds, see our guides to ATAR for medicine, ATAR for law, ATAR for engineering, and ATAR for psychology.
What is a good ATAR for university entry?
A "good" ATAR is the lowest one that gets a student into a course they want to study. A 70 ATAR is excellent for a student aiming at a generalist Bachelor of Arts at a regional university; the same 70 won't get them into Combined Law at the University of Sydney. The number itself only has meaning relative to the entry cut-off for the specific course at the specific university.
As a rough orientation: an ATAR around 70 places a student in roughly the top half of all Australian Year 12s and opens most generalist undergraduate degrees. An ATAR of 90 places them in the top 10% and opens competitive professional pathways like commerce and engineering. An ATAR of 95+ is needed for medicine, law combined degrees, and elite generalist programmes (the University of Melbourne BA and similar). For a course-by-course mapping, our guide to what ATAR you need for your course covers the major pathways.
Cut-offs also shift year-to-year because they reflect the lowest ATAR that filled the course's enrolment quota that year. A 92 cut-off in 2024 might be 91 in 2025 if demand softened, or 93 if it strengthened. Students should treat the previous year's cut-off as a guide, not a guarantee. For a fuller treatment of how to read ATAR data without overreacting to noise, our piece on 10 ATAR facts every student should know works through the most-misunderstood numbers.
Can I improve my ATAR with tutoring?
Yes — but the realistic gain depends on how early the work starts and which subjects the student targets. Year 11 is the better starting point than Year 12, because Year 11 study habits and content depth set the floor for Year 12 performance, and because some Year 12 assessment marks (school-based assessments, SACs, the start of HSC course assessment) begin in Term 1 of Year 12 itself.
The students who get the biggest ATAR lift from tutoring tend to be the ones whose marks are inconsistent across subjects. A student sitting on 70-75 raw marks in three subjects and 60 in a fourth gains more by lifting the 60 to 70 than by pushing one of the strong subjects from 75 to 80 — the aggregate maths favours the rebalance. A good tutor's job is to find the lowest-performing subject and the specific topic causing the drag, then work it weekly until the gap closes. For more on how this looks in practice, see our piece on why personalised tutoring is key to achieving ATAR success, and for students worried about their current trajectory, concerned about your ATAR? Read this.
At Tutero we match Year 11 and Year 12 students with subject-specialist online tutors who have themselves achieved high ATARs in the same subjects, and who teach to the specific state's syllabus and assessment style. Sessions are weekly, no contracts, and start at A$65/hr — the same rate from Year 1 through Year 12, no senior-subject premium. Find an ATAR tutor here.
So how is the ATAR actually calculated?
To pull the whole calculation back together: every Year 12 in your state earns a raw mark in each of their subjects. Each state's tertiary admissions centre scales those raw marks up or down based on the academic strength of each subject's cohort that year — a 75 in a strong-cohort subject is worth more than a 75 in a weaker one. The student's best scaled marks (10 units in NSW, four-plus subjects in Victoria, five subjects in Queensland and WA) are added together to form an aggregate. Every student in the state is then ranked by aggregate, and the resulting percentile rank — between 0.00 and 99.95 — is the ATAR.
The number is a rank, not a score. It depends on the cohort, not just on the student. And the calculation runs steeper at the top — the difference between 95 and 99.95 is far more than the difference between 70 and 75. Most of the work happens long before exam week, in every assessment, SAC, trial, and weekly task that quietly feeds into a scaled mark.
If you want one-on-one help with a specific Year 11 or Year 12 subject — or with the broader exam strategy — our subject-specialist tutors are here. Get started here, no contracts, weekly sessions.
The ATAR is a rank, not a score. It depends on the cohort, not just on the student.
The ATAR is a rank, not a score. It depends on the cohort, not just on the student.
If your child is heading into Year 12 — or you are the Year 12 student reading this — the ATAR is the number that quietly shapes a year of decisions: which subjects to keep, how hard to push, and which university courses are realistic. The mechanics behind it can feel mysterious, but they aren't.
Quick answer. The Australian Tertiary Admission Rank (ATAR) is a percentile rank between 0.00 and 99.95 that tells universities where a student sits relative to their state-wide age cohort. To produce it, each state takes a student's raw subject marks, scales them up or down based on how strong each subject's cohort was that year, adds the best scaled marks together to form an aggregate, and then ranks every student in the state by aggregate. An ATAR of 80.00 means a student finished ahead of 80% of their age group.
Below, we walk through every stage of the calculation and then cover how each state and territory applies the rules — including the differences in how Victoria handles study scores, how NSW bands its units, and what Queensland did when it switched to its current ATAR system in 2020.
What is the ATAR and how does it differ from a mark out of 100?
The ATAR is not a mark or a score — it's a rank. Specifically, it's a number between 0.00 and 99.95, in 0.05 increments, that tells universities where a student sits compared to every other student in their state-wide age cohort (every 16-to-20-year-old, not just Year 12 students).
An ATAR of 80.00 means the student finished in the top 20% of their age cohort. An ATAR of 99.95 — the highest possible — means the top 0.05%. The lowest ATAR most centres report is 30.00; below that, students receive a "less than 30" notation rather than a specific number. The ATAR is calculated by the state's tertiary admissions centre — UAC in NSW and the ACT, VTAC in Victoria, QTAC in Queensland, TISC in WA, SATAC in South Australia and the Northern Territory, and the University of Tasmania for TCE students.
Every state uses the same end-result definition (a percentile rank between 0 and 99.95) but each state's senior secondary system feeds in different inputs — VCE study scores, HSC marks, QCE results, WACE scores, SACE results — which is why the calculation differs in the middle.
How does subject scaling work in the ATAR?
Scaling adjusts each student's raw subject marks up or down based on how strong that subject's cohort was that year. The principle is simple: a 75 in a subject taken mostly by high-performing students is worth more than a 75 in a subject where the cohort was, on average, less academically strong. Without scaling, students would game the system by choosing easier subjects.
The state's tertiary admissions centre measures cohort strength by looking at how the same students who took your subject performed across all their other subjects. If a Specialist Mathematics cohort earned high marks across the board in their other subjects, the admissions centre treats Specialist Mathematics as a strong-cohort subject and scales the raw marks up. If a subject's cohort under-performed in their other subjects, the raw marks scale down. The scaled mark is what feeds into the ATAR, not the raw mark you saw on your report.
Scaling factors are recalculated every year — they are not fixed. A subject that scaled up sharply one year may scale up less the next year if its cohort changed. This is why teachers tell students to choose subjects you can do well in, not subjects with a reputation for scaling well — a strong mark in a subject that scales modestly almost always beats a mediocre mark in a subject that scales aggressively. For a deeper explanation of the threshold marks, our guide to what aggregate you need for an ATAR above 90 works through the scaled-mark sums in NSW and Victoria specifically.
What is the difference between a study score and an ATAR?
The two numbers get conflated, but they measure different things at different stages.
A study score (in Victoria) or a scaled HSC mark (in NSW) is a per-subject ranking that compares a student to every other student who took that same subject. Victorian study scores run from 0 to 50, with 30 representing the median. A study score of 40 means the student finished in roughly the top 9% of students who took that subject. NSW reports scaled marks per subject on a similar percentile-aware basis.
The ATAR sits a layer above the per-subject scores. It takes a student's best scaled subject marks, adds them together to form an aggregate, and ranks that aggregate against every other student's aggregate state-wide. So a study score answers "how did I do in this one subject", and the ATAR answers "how did I do across my best subjects, compared to every other Year 12 in the state".
The practical implication: a strong study score in one subject doesn't guarantee a strong ATAR if the rest of the subjects are weak. Conversely, consistently solid scaled marks across five or six subjects tend to produce a higher ATAR than a single brilliant result with mediocre everything else.
How does the aggregate work and why does it matter?
The aggregate is the sum of a student's best scaled marks, calculated according to the state's specific formula. It's the number that gets ranked against every other student in the state to produce the ATAR.
In New South Wales, the aggregate is the sum of scaled marks across 10 units of ATAR-eligible courses — the best two units of English plus the best eight other units. Most subjects are 2-unit courses, so the typical NSW aggregate draws on five subjects in total. The maximum NSW aggregate is 500.00.
In Victoria, the aggregate is the scaled study score for the student's best English subject, plus the scaled study scores for the next three best subjects, plus 10% of the scaled study scores for the fifth and sixth best subjects (if applicable). The maximum Victorian aggregate is 210.00.
In Queensland, the aggregate (called the Tertiary Entrance Aggregate) is built from the combination of five scaled subjects that yields the highest mark — five general subjects, or four general subjects plus one applied subject, or four general subjects plus a Certificate III VET qualification.
The reason aggregate-vs-ATAR matters: the ATAR is your rank, which depends on the entire state's aggregates that year, not on hitting a specific aggregate target. The same aggregate score can produce slightly different ATARs in different years because the cohort changes. Universities make admissions decisions based on the ATAR rank, not the underlying aggregate.
How is the ATAR calculated in New South Wales?
In NSW, the ATAR is calculated by the Universities Admissions Centre (UAC). It is based on an aggregate of scaled marks in 10 units of ATAR-eligible courses, made up of:
- The best 2 units of English (mandatory — every NSW ATAR includes English)
- The best 8 other units, including no more than 2 units of Category B subjects (most VET-equivalent and applied subjects)
UAC scales each subject's raw HSC marks based on the academic strength of the cohort that took that subject in that year. Most subjects are 2-unit courses, so the typical NSW ATAR draws on five subjects' worth of scaled marks. The maximum aggregate is 500.00, which converts to an ATAR of 99.95. For students aiming high, our explainer on what aggregate is needed for an ATAR above 90 works through the threshold for HSC students specifically.
How is the ATAR calculated in Victoria?
In Victoria, the ATAR is calculated by the Victorian Tertiary Admissions Centre (VTAC). The Victorian system runs on study scores: each VCE subject produces a scaled study score from 0 to 50, with 30 as the median. The ATAR is built on an aggregate of:
- The scaled study score for the student's best English subject (English, English Language, English as an Additional Language, or Literature)
- The scaled study scores for the next three best subjects
- 10% of the scaled study scores for the fifth and sixth best subjects (if applicable)
The maximum Victorian aggregate is 210.00, which corresponds to an ATAR of 99.95. Victoria's tight reliance on study scores means a strong study score in English is structurally important — it's the one subject every Victorian ATAR must include. For students struggling with subject choice, our walk-through of how to achieve your dream ATAR covers how to load the four-best slot deliberately.
How is the ATAR calculated in Queensland?
Queensland switched to a fully scaled, aggregate-based ATAR in 2020 with the introduction of the Queensland Certificate of Education (QCE). Before then, Queensland used an Overall Position (OP) instead. The ATAR is now calculated by the Queensland Tertiary Admissions Centre (QTAC) based on the combination of scaled results that produces the highest aggregate, drawn from one of the following:
- 5 general subjects (Units 3 and 4)
- 4 general subjects plus 1 applied subject (both at Units 3 and 4)
- 4 general subjects (Units 3 and 4) plus 1 VET qualification at Certificate III or higher
QTAC selects whichever combination yields the highest aggregate for that student — a student doesn't have to nominate the combination in advance. For Queensland students considering specific university pathways, our breakdown of ATAR for engineering covers QTAC-relevant cut-offs.
How is the ATAR calculated in Western Australia?
In WA, the ATAR is calculated by the Tertiary Institutions Service Centre (TISC). The Western Australian aggregate, called the Tertiary Entrance Aggregate (TEA), is calculated as:
- The student's best four scaled subject scores from courses completed in the past five years
- Plus 10% of the next best scaled score in Mathematics Methods, Mathematics Specialist, or any Language Other Than English (LOTE) — the LOTE/maths bonus
WA students need at least four scaled scores for an ATAR to be calculated at all. The maximum TEA is 430.00, including the LOTE/maths bonus. WA's bonus structure rewards students who keep advanced mathematics or a language in their subject load through Year 12.
How is the ATAR calculated in South Australia and the Northern Territory?
South Australia and the Northern Territory share a tertiary admissions centre — the South Australian Tertiary Admissions Centre (SATAC) — and run the same SACE / NTCET certificate. To be eligible for an ATAR in either jurisdiction, a student must complete:
- The Personal Learning Plan (Stage 1)
- A Stage 1 or Stage 2 mathematics subject
- A Stage 1 or Stage 2 English subject
- A Stage 2 Research Project
- Plus 150 additional credits, with at least 60 at Stage 2
SATAC then takes the student's best three Stage 2 TAS (Tertiary Admission Subjects) scaled scores, plus the best outcome from a flexible option (a fourth TAS, a half of a fourth TAS, or a Recognised Subject), to form the aggregate. The maximum aggregate is 90.00, which corresponds to an ATAR of 99.95.
How is the ATAR calculated in the ACT and Tasmania?
In the Australian Capital Territory, the ATAR is calculated jointly by the ACT Board of Senior Secondary Studies and UAC. The ACT aggregate is the sum of:
- The student's three best scaled scores from major courses
- 60% of the next best major or minor course
In Tasmania, the ATAR is calculated by the Office of Tasmanian Assessment, Standards and Certification (TASC) for students completing the Tasmanian Certificate of Education (TCE). The TCE aggregate is the sum of the student's five best pre-tertiary subject scores, three of which must come from the student's final year of study.
Why is my ATAR lower than my expected percentage mark?
This is the most common shock for students opening their results: a Year 12 final mark of 80% in each subject does not produce an ATAR of 80. The reason is that the ATAR is a rank against the cohort, not a percentage of the maximum mark.
Two effects drive the gap. First, scaling adjusts your raw mark before it enters the aggregate — a raw 80 in a moderately-scaled subject might enter as 73 once scaled, simply because the cohort that took that subject was, on average, less academically strong. Second, the ATAR ranks you against students who, by definition, also worked hard in Year 12 — the cohort is self-selected for effort. Earning the top 20% of that cohort is harder than earning 80% on a generic test.
The relationship between marks and ATAR also runs steeper at the top end. The difference between an ATAR of 95 and 99 might be 10 raw marks across the board; the difference between 99 and 99.95 might be just two or three. This is why students aiming for selective courses — medicine, law, the top engineering streams — focus on consistency across every subject, not on one outlier result. For specific course thresholds, see our guides to ATAR for medicine, ATAR for law, ATAR for engineering, and ATAR for psychology.
What is a good ATAR for university entry?
A "good" ATAR is the lowest one that gets a student into a course they want to study. A 70 ATAR is excellent for a student aiming at a generalist Bachelor of Arts at a regional university; the same 70 won't get them into Combined Law at the University of Sydney. The number itself only has meaning relative to the entry cut-off for the specific course at the specific university.
As a rough orientation: an ATAR around 70 places a student in roughly the top half of all Australian Year 12s and opens most generalist undergraduate degrees. An ATAR of 90 places them in the top 10% and opens competitive professional pathways like commerce and engineering. An ATAR of 95+ is needed for medicine, law combined degrees, and elite generalist programmes (the University of Melbourne BA and similar). For a course-by-course mapping, our guide to what ATAR you need for your course covers the major pathways.
Cut-offs also shift year-to-year because they reflect the lowest ATAR that filled the course's enrolment quota that year. A 92 cut-off in 2024 might be 91 in 2025 if demand softened, or 93 if it strengthened. Students should treat the previous year's cut-off as a guide, not a guarantee. For a fuller treatment of how to read ATAR data without overreacting to noise, our piece on 10 ATAR facts every student should know works through the most-misunderstood numbers.
Can I improve my ATAR with tutoring?
Yes — but the realistic gain depends on how early the work starts and which subjects the student targets. Year 11 is the better starting point than Year 12, because Year 11 study habits and content depth set the floor for Year 12 performance, and because some Year 12 assessment marks (school-based assessments, SACs, the start of HSC course assessment) begin in Term 1 of Year 12 itself.
The students who get the biggest ATAR lift from tutoring tend to be the ones whose marks are inconsistent across subjects. A student sitting on 70-75 raw marks in three subjects and 60 in a fourth gains more by lifting the 60 to 70 than by pushing one of the strong subjects from 75 to 80 — the aggregate maths favours the rebalance. A good tutor's job is to find the lowest-performing subject and the specific topic causing the drag, then work it weekly until the gap closes. For more on how this looks in practice, see our piece on why personalised tutoring is key to achieving ATAR success, and for students worried about their current trajectory, concerned about your ATAR? Read this.
At Tutero we match Year 11 and Year 12 students with subject-specialist online tutors who have themselves achieved high ATARs in the same subjects, and who teach to the specific state's syllabus and assessment style. Sessions are weekly, no contracts, and start at A$65/hr — the same rate from Year 1 through Year 12, no senior-subject premium. Find an ATAR tutor here.
So how is the ATAR actually calculated?
To pull the whole calculation back together: every Year 12 in your state earns a raw mark in each of their subjects. Each state's tertiary admissions centre scales those raw marks up or down based on the academic strength of each subject's cohort that year — a 75 in a strong-cohort subject is worth more than a 75 in a weaker one. The student's best scaled marks (10 units in NSW, four-plus subjects in Victoria, five subjects in Queensland and WA) are added together to form an aggregate. Every student in the state is then ranked by aggregate, and the resulting percentile rank — between 0.00 and 99.95 — is the ATAR.
The number is a rank, not a score. It depends on the cohort, not just on the student. And the calculation runs steeper at the top — the difference between 95 and 99.95 is far more than the difference between 70 and 75. Most of the work happens long before exam week, in every assessment, SAC, trial, and weekly task that quietly feeds into a scaled mark.
If you want one-on-one help with a specific Year 11 or Year 12 subject — or with the broader exam strategy — our subject-specialist tutors are here. Get started here, no contracts, weekly sessions.
FAQ
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Online maths tutoring at Tutero is catering to students of all year levels. We offer programs tailored to the unique learning curves of each age group.
We also have expert NAPLAN and ATAR subject tutors, ensuring students are well-equipped for these pivotal assessments.
We recommend at least two to three session per week for consistent progress. However, this can vary based on your child's needs and goals.
Our platform uses advanced security protocols to ensure the safety and privacy of all our online sessions.
Parents are welcome to observe sessions. We believe in a collaborative approach to education.
We provide regular progress reports and assessments to track your child’s academic development.
Yes, we prioritise the student-tutor relationship and can arrange a change if the need arises.
Yes, we offer a range of resources and materials, including interactive exercises and practice worksheets.
The ATAR is a rank, not a score. It depends on the cohort, not just on the student.
The ATAR is a rank, not a score. It depends on the cohort, not just on the student.
The ATAR is a rank, not a score. It depends on the cohort, not just on the student.
A 75 in a strong-cohort subject is worth more than a 75 in a weaker one. That is the whole game.
If your child is heading into Year 12 — or you are the Year 12 student reading this — the ATAR is the number that quietly shapes a year of decisions: which subjects to keep, how hard to push, and which university courses are realistic. The mechanics behind it can feel mysterious, but they aren't.
Quick answer. The Australian Tertiary Admission Rank (ATAR) is a percentile rank between 0.00 and 99.95 that tells universities where a student sits relative to their state-wide age cohort. To produce it, each state takes a student's raw subject marks, scales them up or down based on how strong each subject's cohort was that year, adds the best scaled marks together to form an aggregate, and then ranks every student in the state by aggregate. An ATAR of 80.00 means a student finished ahead of 80% of their age group.
Below, we walk through every stage of the calculation and then cover how each state and territory applies the rules — including the differences in how Victoria handles study scores, how NSW bands its units, and what Queensland did when it switched to its current ATAR system in 2020.
What is the ATAR and how does it differ from a mark out of 100?
The ATAR is not a mark or a score — it's a rank. Specifically, it's a number between 0.00 and 99.95, in 0.05 increments, that tells universities where a student sits compared to every other student in their state-wide age cohort (every 16-to-20-year-old, not just Year 12 students).
An ATAR of 80.00 means the student finished in the top 20% of their age cohort. An ATAR of 99.95 — the highest possible — means the top 0.05%. The lowest ATAR most centres report is 30.00; below that, students receive a "less than 30" notation rather than a specific number. The ATAR is calculated by the state's tertiary admissions centre — UAC in NSW and the ACT, VTAC in Victoria, QTAC in Queensland, TISC in WA, SATAC in South Australia and the Northern Territory, and the University of Tasmania for TCE students.
Every state uses the same end-result definition (a percentile rank between 0 and 99.95) but each state's senior secondary system feeds in different inputs — VCE study scores, HSC marks, QCE results, WACE scores, SACE results — which is why the calculation differs in the middle.
How does subject scaling work in the ATAR?
Scaling adjusts each student's raw subject marks up or down based on how strong that subject's cohort was that year. The principle is simple: a 75 in a subject taken mostly by high-performing students is worth more than a 75 in a subject where the cohort was, on average, less academically strong. Without scaling, students would game the system by choosing easier subjects.
The state's tertiary admissions centre measures cohort strength by looking at how the same students who took your subject performed across all their other subjects. If a Specialist Mathematics cohort earned high marks across the board in their other subjects, the admissions centre treats Specialist Mathematics as a strong-cohort subject and scales the raw marks up. If a subject's cohort under-performed in their other subjects, the raw marks scale down. The scaled mark is what feeds into the ATAR, not the raw mark you saw on your report.
Scaling factors are recalculated every year — they are not fixed. A subject that scaled up sharply one year may scale up less the next year if its cohort changed. This is why teachers tell students to choose subjects you can do well in, not subjects with a reputation for scaling well — a strong mark in a subject that scales modestly almost always beats a mediocre mark in a subject that scales aggressively. For a deeper explanation of the threshold marks, our guide to what aggregate you need for an ATAR above 90 works through the scaled-mark sums in NSW and Victoria specifically.
What is the difference between a study score and an ATAR?
The two numbers get conflated, but they measure different things at different stages.
A study score (in Victoria) or a scaled HSC mark (in NSW) is a per-subject ranking that compares a student to every other student who took that same subject. Victorian study scores run from 0 to 50, with 30 representing the median. A study score of 40 means the student finished in roughly the top 9% of students who took that subject. NSW reports scaled marks per subject on a similar percentile-aware basis.
The ATAR sits a layer above the per-subject scores. It takes a student's best scaled subject marks, adds them together to form an aggregate, and ranks that aggregate against every other student's aggregate state-wide. So a study score answers "how did I do in this one subject", and the ATAR answers "how did I do across my best subjects, compared to every other Year 12 in the state".
The practical implication: a strong study score in one subject doesn't guarantee a strong ATAR if the rest of the subjects are weak. Conversely, consistently solid scaled marks across five or six subjects tend to produce a higher ATAR than a single brilliant result with mediocre everything else.
How does the aggregate work and why does it matter?
The aggregate is the sum of a student's best scaled marks, calculated according to the state's specific formula. It's the number that gets ranked against every other student in the state to produce the ATAR.
In New South Wales, the aggregate is the sum of scaled marks across 10 units of ATAR-eligible courses — the best two units of English plus the best eight other units. Most subjects are 2-unit courses, so the typical NSW aggregate draws on five subjects in total. The maximum NSW aggregate is 500.00.
In Victoria, the aggregate is the scaled study score for the student's best English subject, plus the scaled study scores for the next three best subjects, plus 10% of the scaled study scores for the fifth and sixth best subjects (if applicable). The maximum Victorian aggregate is 210.00.
In Queensland, the aggregate (called the Tertiary Entrance Aggregate) is built from the combination of five scaled subjects that yields the highest mark — five general subjects, or four general subjects plus one applied subject, or four general subjects plus a Certificate III VET qualification.
The reason aggregate-vs-ATAR matters: the ATAR is your rank, which depends on the entire state's aggregates that year, not on hitting a specific aggregate target. The same aggregate score can produce slightly different ATARs in different years because the cohort changes. Universities make admissions decisions based on the ATAR rank, not the underlying aggregate.
How is the ATAR calculated in New South Wales?
In NSW, the ATAR is calculated by the Universities Admissions Centre (UAC). It is based on an aggregate of scaled marks in 10 units of ATAR-eligible courses, made up of:
- The best 2 units of English (mandatory — every NSW ATAR includes English)
- The best 8 other units, including no more than 2 units of Category B subjects (most VET-equivalent and applied subjects)
UAC scales each subject's raw HSC marks based on the academic strength of the cohort that took that subject in that year. Most subjects are 2-unit courses, so the typical NSW ATAR draws on five subjects' worth of scaled marks. The maximum aggregate is 500.00, which converts to an ATAR of 99.95. For students aiming high, our explainer on what aggregate is needed for an ATAR above 90 works through the threshold for HSC students specifically.
How is the ATAR calculated in Victoria?
In Victoria, the ATAR is calculated by the Victorian Tertiary Admissions Centre (VTAC). The Victorian system runs on study scores: each VCE subject produces a scaled study score from 0 to 50, with 30 as the median. The ATAR is built on an aggregate of:
- The scaled study score for the student's best English subject (English, English Language, English as an Additional Language, or Literature)
- The scaled study scores for the next three best subjects
- 10% of the scaled study scores for the fifth and sixth best subjects (if applicable)
The maximum Victorian aggregate is 210.00, which corresponds to an ATAR of 99.95. Victoria's tight reliance on study scores means a strong study score in English is structurally important — it's the one subject every Victorian ATAR must include. For students struggling with subject choice, our walk-through of how to achieve your dream ATAR covers how to load the four-best slot deliberately.
How is the ATAR calculated in Queensland?
Queensland switched to a fully scaled, aggregate-based ATAR in 2020 with the introduction of the Queensland Certificate of Education (QCE). Before then, Queensland used an Overall Position (OP) instead. The ATAR is now calculated by the Queensland Tertiary Admissions Centre (QTAC) based on the combination of scaled results that produces the highest aggregate, drawn from one of the following:
- 5 general subjects (Units 3 and 4)
- 4 general subjects plus 1 applied subject (both at Units 3 and 4)
- 4 general subjects (Units 3 and 4) plus 1 VET qualification at Certificate III or higher
QTAC selects whichever combination yields the highest aggregate for that student — a student doesn't have to nominate the combination in advance. For Queensland students considering specific university pathways, our breakdown of ATAR for engineering covers QTAC-relevant cut-offs.
How is the ATAR calculated in Western Australia?
In WA, the ATAR is calculated by the Tertiary Institutions Service Centre (TISC). The Western Australian aggregate, called the Tertiary Entrance Aggregate (TEA), is calculated as:
- The student's best four scaled subject scores from courses completed in the past five years
- Plus 10% of the next best scaled score in Mathematics Methods, Mathematics Specialist, or any Language Other Than English (LOTE) — the LOTE/maths bonus
WA students need at least four scaled scores for an ATAR to be calculated at all. The maximum TEA is 430.00, including the LOTE/maths bonus. WA's bonus structure rewards students who keep advanced mathematics or a language in their subject load through Year 12.
How is the ATAR calculated in South Australia and the Northern Territory?
South Australia and the Northern Territory share a tertiary admissions centre — the South Australian Tertiary Admissions Centre (SATAC) — and run the same SACE / NTCET certificate. To be eligible for an ATAR in either jurisdiction, a student must complete:
- The Personal Learning Plan (Stage 1)
- A Stage 1 or Stage 2 mathematics subject
- A Stage 1 or Stage 2 English subject
- A Stage 2 Research Project
- Plus 150 additional credits, with at least 60 at Stage 2
SATAC then takes the student's best three Stage 2 TAS (Tertiary Admission Subjects) scaled scores, plus the best outcome from a flexible option (a fourth TAS, a half of a fourth TAS, or a Recognised Subject), to form the aggregate. The maximum aggregate is 90.00, which corresponds to an ATAR of 99.95.
How is the ATAR calculated in the ACT and Tasmania?
In the Australian Capital Territory, the ATAR is calculated jointly by the ACT Board of Senior Secondary Studies and UAC. The ACT aggregate is the sum of:
- The student's three best scaled scores from major courses
- 60% of the next best major or minor course
In Tasmania, the ATAR is calculated by the Office of Tasmanian Assessment, Standards and Certification (TASC) for students completing the Tasmanian Certificate of Education (TCE). The TCE aggregate is the sum of the student's five best pre-tertiary subject scores, three of which must come from the student's final year of study.
Why is my ATAR lower than my expected percentage mark?
This is the most common shock for students opening their results: a Year 12 final mark of 80% in each subject does not produce an ATAR of 80. The reason is that the ATAR is a rank against the cohort, not a percentage of the maximum mark.
Two effects drive the gap. First, scaling adjusts your raw mark before it enters the aggregate — a raw 80 in a moderately-scaled subject might enter as 73 once scaled, simply because the cohort that took that subject was, on average, less academically strong. Second, the ATAR ranks you against students who, by definition, also worked hard in Year 12 — the cohort is self-selected for effort. Earning the top 20% of that cohort is harder than earning 80% on a generic test.
The relationship between marks and ATAR also runs steeper at the top end. The difference between an ATAR of 95 and 99 might be 10 raw marks across the board; the difference between 99 and 99.95 might be just two or three. This is why students aiming for selective courses — medicine, law, the top engineering streams — focus on consistency across every subject, not on one outlier result. For specific course thresholds, see our guides to ATAR for medicine, ATAR for law, ATAR for engineering, and ATAR for psychology.
What is a good ATAR for university entry?
A "good" ATAR is the lowest one that gets a student into a course they want to study. A 70 ATAR is excellent for a student aiming at a generalist Bachelor of Arts at a regional university; the same 70 won't get them into Combined Law at the University of Sydney. The number itself only has meaning relative to the entry cut-off for the specific course at the specific university.
As a rough orientation: an ATAR around 70 places a student in roughly the top half of all Australian Year 12s and opens most generalist undergraduate degrees. An ATAR of 90 places them in the top 10% and opens competitive professional pathways like commerce and engineering. An ATAR of 95+ is needed for medicine, law combined degrees, and elite generalist programmes (the University of Melbourne BA and similar). For a course-by-course mapping, our guide to what ATAR you need for your course covers the major pathways.
Cut-offs also shift year-to-year because they reflect the lowest ATAR that filled the course's enrolment quota that year. A 92 cut-off in 2024 might be 91 in 2025 if demand softened, or 93 if it strengthened. Students should treat the previous year's cut-off as a guide, not a guarantee. For a fuller treatment of how to read ATAR data without overreacting to noise, our piece on 10 ATAR facts every student should know works through the most-misunderstood numbers.
Can I improve my ATAR with tutoring?
Yes — but the realistic gain depends on how early the work starts and which subjects the student targets. Year 11 is the better starting point than Year 12, because Year 11 study habits and content depth set the floor for Year 12 performance, and because some Year 12 assessment marks (school-based assessments, SACs, the start of HSC course assessment) begin in Term 1 of Year 12 itself.
The students who get the biggest ATAR lift from tutoring tend to be the ones whose marks are inconsistent across subjects. A student sitting on 70-75 raw marks in three subjects and 60 in a fourth gains more by lifting the 60 to 70 than by pushing one of the strong subjects from 75 to 80 — the aggregate maths favours the rebalance. A good tutor's job is to find the lowest-performing subject and the specific topic causing the drag, then work it weekly until the gap closes. For more on how this looks in practice, see our piece on why personalised tutoring is key to achieving ATAR success, and for students worried about their current trajectory, concerned about your ATAR? Read this.
At Tutero we match Year 11 and Year 12 students with subject-specialist online tutors who have themselves achieved high ATARs in the same subjects, and who teach to the specific state's syllabus and assessment style. Sessions are weekly, no contracts, and start at A$65/hr — the same rate from Year 1 through Year 12, no senior-subject premium. Find an ATAR tutor here.
So how is the ATAR actually calculated?
To pull the whole calculation back together: every Year 12 in your state earns a raw mark in each of their subjects. Each state's tertiary admissions centre scales those raw marks up or down based on the academic strength of each subject's cohort that year — a 75 in a strong-cohort subject is worth more than a 75 in a weaker one. The student's best scaled marks (10 units in NSW, four-plus subjects in Victoria, five subjects in Queensland and WA) are added together to form an aggregate. Every student in the state is then ranked by aggregate, and the resulting percentile rank — between 0.00 and 99.95 — is the ATAR.
The number is a rank, not a score. It depends on the cohort, not just on the student. And the calculation runs steeper at the top — the difference between 95 and 99.95 is far more than the difference between 70 and 75. Most of the work happens long before exam week, in every assessment, SAC, trial, and weekly task that quietly feeds into a scaled mark.
If you want one-on-one help with a specific Year 11 or Year 12 subject — or with the broader exam strategy — our subject-specialist tutors are here. Get started here, no contracts, weekly sessions.
The ATAR is a rank, not a score. It depends on the cohort, not just on the student.
A 75 in a strong-cohort subject is worth more than a 75 in a weaker one. That is the whole game.
The ATAR is a percentile rank between 0.00 and 99.95, in 0.05 increments. It is not a mark out of 100. An ATAR of 80.00 means a student finished ahead of 80% of their state-wide age cohort (every 16-to-20-year-old in their state, not only Year 12 students). The maximum is 99.95; below 30.00, students receive a 'less than 30' notation rather than a specific number.
Each state and territory has its own tertiary admissions centre that calculates ATARs for that jurisdiction. UAC (the Universities Admissions Centre) calculates ATARs for NSW and the ACT. VTAC handles Victoria. QTAC handles Queensland. TISC handles Western Australia. SATAC handles South Australia and the Northern Territory. Tasmania's ATARs are handled by the Office of Tasmanian Assessment, Standards and Certification (TASC). Universities then use the ATAR rank for admissions, but they don't calculate it themselves.
Both. In every state, the raw subject mark that feeds into the ATAR includes school-based assessment (SACs in Victoria, internal assessment in NSW, internal assessment in QCE) plus the final external exam. The exact weightings vary by state and subject, but typically school-based assessment carries 30%-50% of the raw mark and the final exam carries the rest. This is why most of the ATAR is decided long before exam week.
Not exactly — the ATAR depends on every other student's marks that year, so the final rank can only be produced after all results are in. Most state admissions centres publish ATAR calculators that estimate a student's likely ATAR using the previous year's scaling factors and aggregate-to-ATAR conversion table. These are useful for planning, but the actual ATAR is only finalised when the cohort's data is processed.
In most states, yes — students can carry forward earlier results and complete additional subjects in a subsequent year, and the admissions centre will use whichever combination produces the highest aggregate. NSW UAC, for example, uses the best 10 units regardless of the year completed (within a five-year window). Each state has slightly different rules on accumulation and recency, so check the local admissions centre's policy before deciding.
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