How the ATAR Is Calculated in Victoria: A Plain-English Guide for Parents
The ATAR can feel like a mystery number that arrives in December and decides everything. The good news is that the way it is worked out is public, and once you see the steps it makes a lot more sense. This guide walks through how the ATAR is calculated in Victoria, in plain language, using information from the official bodies that run it.
First, the ATAR is a rank, not a mark
ATAR stands for Australian Tertiary Admission Rank. It is not a percentage and it is not a score out of 100. It tells universities where your child sits compared with other young people of the same age.
In Victoria, the ATAR is calculated by the Victorian Tertiary Admissions Centre (VTAC). VTAC describes it as a percentile rank of a student's Year 12 achievement compared with the Year 12 age group in that year. That means your child is compared with their whole age group, not only the classmates who sat the same exams.
A few key facts:
- ATARs run from 0.00 up to a maximum of 99.95, in steps of 0.05.
- No one can get 100, because a percentile rank shows how many people you performed higher than, and the top student cannot outperform themselves.
- An ATAR of 90.00 means your child performed higher than about 90% of their age group. An ATAR of 99.00 places them roughly in the top 1%.
- ATARs below 30.00 are shown on the statement as "less than 30".
- There is no "pass" or "fail" ATAR. Every student who receives one has passed the VCE.
Each state and territory calculates its own ATAR, but according to the Universities Admissions Centre (UAC), ATARs are comparable across Australia.
Step 1: Your child earns a study score in each subject
For each VCE subject completed at Units 3 and 4, the Victorian Curriculum and Assessment Authority (VCAA) gives a study score out of 50. A study score shows how your child performed compared with every other Victorian student who took that subject in the same year.
Study scores are spread so that the average in every subject is 30. A score of 30 is right in the middle of the group, and scores above 40 are a strong result.
Step 2: VTAC scales the study scores
Next, VTAC adjusts each study score. This is called scaling, and it is the part that causes the most confusion.
A common myth is that scaling rewards "hard" subjects. That is not how it works. VTAC is clear that scaling happens "not because some studies are inherently harder or easier". Instead, it reflects the strength of the competition in each subject.
To measure this, VTAC looks at how the students in a subject perform in their other subjects. If the students taking a subject tend to do well across the board, that subject's scores are scaled up. If they tend to do less well elsewhere, the scores are scaled down. Mathematics and languages have some extra rules on top of this.
An everyday way to think about it: imagine two running races. In one, your child finishes in the middle of a field of state-level athletes. In the other, they finish in the middle of a casual community fun run. Both are "middle of the pack", but the first result says more, because the competition was stronger. Scaling is how VTAC makes a fair comparison between races with different fields.
Scaled scores can range from 0 up to 55. Scaling changes every year, depending on who takes each subject. VTAC publishes the real figures each year in its Scaling Report, which shows what common study scores (20, 25, 30, 35, 40, 45 and 50) became after scaling in each subject.
Step 3: VTAC adds up the aggregate
VTAC then adds the scaled scores together to make an aggregate. This is done in two parts.
The "primary four"
- One English subject: the best scaled score from the English group. This can be English, English as an Additional Language (EAL), English Language or Literature. It counts even if it is not one of your child's four best scaled scores.
- The next three best: the three highest remaining scaled scores, from any permissible subjects.
Up to two "increments"
- If your child has a fifth and sixth subject, 10% of each of those scaled scores is added on top.
- At most six subjects count. If your child has more, only the best six are used.
- Other things can also count as an increment, such as some VET studies or a university subject completed while at school. The rules for these are set out in the VTAC ATAR and Scaling Guide.
There are also some limits on which subject combinations can count together, so it is worth checking the guide when choosing subjects.
Step 4: The aggregate becomes the ATAR
Finally, VTAC ranks every student's aggregate and converts it to the percentile scale. Aggregates usually land somewhere between 0 and about 210. VTAC publishes a table each year showing roughly which aggregate was needed for each ATAR, available on its Reports and Statistics page.
A worked example: meet Alex
Alex is a fictional Year 12 student who completed five VCE subjects. The scaled scores below are illustrative only, made up to show how the steps fit together. They are not real scaling data. For actual figures, see VTAC's latest Scaling Report.
| Subject | Study score (from VCAA) | Scaled score (illustrative) | How it counts |
|---|---|---|---|
| English | 33 | 31 | Primary four (English group) |
| Mathematical Methods | 35 | 40 | Primary four |
| Physics | 34 | 36 | Primary four |
| Biology | 33 | 34 | Primary four |
| Psychology | 33 | 32 | Increment: 10% = 3.2 |
Here is how Alex's aggregate adds up:
- English group: 31
- Next three best scaled scores: 40 + 36 + 34 = 110
- Primary four total: 31 + 110 = 141
- Increment from the fifth subject: 10% of 32 = 3.2
- Aggregate: 141 + 3.2 = 144.2
Notice two things. First, every number in the sum is a scaled score, not the original study score. Second, Alex's Psychology scaled score (32) is actually higher than English (31). Without the English rule, Psychology would be in the primary four. Because English must be included, Psychology becomes the fifth subject and only adds 10% of its score.
VTAC would then rank Alex's aggregate of 144.2 against everyone else's to produce an ATAR.
What this means for your child
- Every subject matters, but the English subject and the next three best do most of the heavy lifting.
- Choose subjects your child enjoys and can do well in. Because scaling depends on who takes a subject each year, picking subjects just to "game" scaling is a gamble. A strong result in a subject your child is good at usually beats a weak result in one that tends to scale up.
- The ATAR is only one part of the picture. Many courses also use prerequisites, interviews, folios or adjustment schemes. Adjustments can raise a student's selection rank for a course, but they do not change the ATAR itself.
Want support for the VCE years?
Avin Learning offers online VCE tutoring with University of Melbourne and Monash tutors who know the study designs and exam expectations. We also run free VCE accountability sessions to help students stay organised, keep on track and build steady study habits through Year 11 and 12.
If you would like to talk about how we can help your child, book a call with us.
Sources
- VTAC, ATAR: https://vtac.edu.au/atar
- VTAC Help Centre, ATAR and scaling: https://vtac.edu.au/help/atar-scaling
- VTAC ATAR and Scaling Guide 2026: https://vtac.edu.au/guides/atar-scaling-guide-2026.html
- VTAC, Reports and Statistics: https://vtac.edu.au/reports
- VTAC, 2025 Scaling Report (PDF): https://vtac.edu.au/files/pdf/reports/scaling-report-25.pdf
- VCAA, VCE Administrative Handbook: Score aggregation: https://vcaa.vic.edu.au/administration/vce-administrative-handbook/score-aggregation
- UAC, Australian Tertiary Admission Rank: https://www.uac.edu.au/atar