VCE ATAR calculator: estimate your ATAR from study scores with VTAC's 2025 scaling and aggregate tables, the primary four and increment rules, what scaled scores are, the 2025 scaled score for every main study at 30, 40, 45 and 50, the aggregate each ATAR needed, what moves the result, and a printable

A VCE ATAR calculator has to do three things VTAC does every December: scale each study score with the year's scaling table, build the aggregate under the primary-four and increment rules, and read the ATAR from the aggregate table. This one uses VTAC's 2025 tables for all three, states exactly where it interpolates, and shows the scaled score of every study you enter, so you can see which one is carrying the aggregate.

Download the VCE scaling and ATAR table (PDF) (the 2025 scaled score of every main study at 30, 40, 45 and 50, the primary-four and increment rules with a worked example, the aggregate each ATAR needed in 2025, and a planner; two pages, free).

The calculator

How the VCE ATAR is built

The study score is the VCAA's number: a rank within the study on a scale with a mean of 30 and a standard deviation of 7, so that 40 is about the top 9 percent and 45 about the top 2 percent of that study's students. It comes from the graded assessments (the SACs, moderated against the exam, and the exam itself) and it is the input to everything below. How it is produced, and why no study score calculator can work, is in VCE study score explained.

The scaled score is VTAC's adjustment of the study score for the strength of the cohort in that study. A study whose students, on average, score highly in their other studies scales up (a 30 in Specialist Mathematics was a scaled 43 in 2025; in Latin, 46); a study whose students score lower elsewhere scales down (a 30 in Foundation Mathematics was 20, in Industry and Enterprise 20). The scaling has nothing to do with how hard the subject is; it measures who takes it. A 50 is a 50 or a little more in every study.

The aggregate is the scaled score of the best English-group study (English, English Language, Literature or EAL), plus the next three highest scaled scores from any studies (these four are the primary four), plus 10 percent of the fifth and sixth highest. Two limits: at most two English-group and two Mathematics-group studies in the primary four, and at most three from either group in all six. The maximum is about 210.

The ATAR is read from VTAC's aggregate-to-ATAR table for the year, which lists the minimum aggregate for each ATAR. The table is where the age-cohort participation model enters, and it changes a little every year.

The 2025 scaled score at 30, 40, 45 and 50, main studies

Full table for all 68 studies in VTAC's 2025 scaling report, and in VCE scaling explained on this site. The language figures include VTAC's language adjustment.

The aggregate each ATAR needed in 2025

So a student with primary four scaled scores of 40, 38, 37 and 36 (aggregate 151) and two increments of 3 each (157) was at about ATAR 90.7 in 2025; study scores of 45 in English, Methods, Chemistry and Physics (scaled 45, 49, 47 and 47, so 188) with two 40s as increments (8.3 more) made 196.3, about 99.35.

What moves a VCE ATAR most

1. The fourth study in the primary four. Five study score points there are worth as much as five in the best study, and usually cost less.
2. The English study, whatever it scores. It is in the primary four by rule, so a 28 in English counts in full while a 38 in a sixth study counts at 10 percent. English deserves the time its share of the aggregate implies.
3. A sixth study. A scaled 35 adds 3.5; near ATAR 90 that is about one ATAR point, near 97 about half a point.
4. Not the scaling. Choose the study you will score highest in among the ones your course needs; the calculator shows that a 35 in a study that scales up is still worth less than a 42 in one that scales down.

Download the VCE scaling and ATAR table (PDF) (the 2025 scaled score of every main study at 30, 40, 45 and 50, the primary-four and increment rules with a worked example, the aggregate each ATAR needed in 2025, and a planner; two pages, free).

Where to get help

A 1-on-1 online class with a tutor who holds a master's in mathematics and teaches Year 11 and 12 maths, physics and chemistry to Australian students at Australian times (7:30 am before school, 4 pm to 6:30 pm after school, and weekend mornings, Sydney time): the estimate above read together in the free 30-minute first class, the subject where five marks buys the most ATAR found, and the term spent on it with every line of working read. The Year 12 Australia page says what the class works on in each state's course.

Questions parents ask

See how we teach this, 1-on-1 online →