VCE study score explained: how the VCAA calculates it from the SACs and the exam (standardising, moderation, ranking, the 30 and 7 scale), why no study score calculator can predict it, how the ATAR is calculated from study scores, an ATAR estimator built on the 2025 VTAC tables, and a printable sheet

"Study score calculator" is the most searched VCE phrase in Victoria, and the honest answer is that no calculator can tell a student their study score from their SAC marks, because a study score is not a mark. It is a rank among every student in the state who did that study that year, and it is not known until the VCAA has every student's results. What can be done, and what this page does, is explain exactly how the VCAA builds the score (so a student knows which marks move it and which do not), and then turn a set of study scores into an ATAR with VTAC's own published tables, which is a calculation that can be done to within about a point. The estimator is below; the method is first, because the method is what changes how a student works.

Download the study score and ATAR sheet with the estimate worksheet (PDF) (the four steps from SAC marks to study score, the weightings of the main studies, the primary-four rules, the 2025 scaled scores for the main studies and the aggregate-to-ATAR table, and a worksheet to estimate an ATAR from six study scores by hand; two pages, free).

How the VCAA calculates a study score

From the VCAA's VCE Administrative Handbook, the score aggregation section, in four steps.

1. Graded assessments. Every study has up to three: the Unit 3 School-assessed Coursework (SACs), the Unit 4 SACs, and the end-of-year examination (two examinations in the mathematics studies). A student needs at least two graded assessments and an S for both Units 3 and 4 in the same year to receive a study score.

2. Statistical moderation. The school's SAC scores are not used as the school marked them. For each school (or group of schools that assess together), the VCAA aligns the distribution of the school's SAC scores with the distribution of that same group of students' examination scores. Moderation does not change the order of students within the school; it changes the level and the spread. A school that gives everyone 90 percent on SACs has those scores pulled down to where its students actually sat in the exam. This is the fact most students misunderstand: a high SAC mark at a school that marks generously is worth less than the same mark at a school that marks hard, and the exam sets the level for everyone.

3. Standardising and weighting. Each graded assessment score is standardised against the state (the score minus the state mean, divided by the state standard deviation), then multiplied by its weighting. For English the total is 0.25 times Unit 3 coursework plus 0.25 times Unit 4 coursework plus 0.50 times the examination. The weightings by study are in the study designs:

4. Ranking and the scale. The weighted totals are ranked. The ranks are normalised with an inverse normal function and placed on a scale with a mean of 30 and a standard deviation of 7, truncated at 0 and 50. Most study scores lie between 23 and 37; about 9 percent of a large study's students score 40 or above and about 2 percent score 45 or above. Studies with small numbers of students get further adjustments.

So the two facts for a student: the exam is at least half of every study and sets the level of the other half; and the score is a position, so the question is never "what mark do I need" but "how many of the other students in Victoria will I beat".

Why a study score calculator cannot work, and what to use instead

A calculator would need the whole state's results. What a student can know during the year:

• The weighting says where the marks are. In Methods the two exams are 60 percent; in English the exam is half; in Physics the Unit 3 SACs are 30 percent, more than Unit 4's.
• The school's history. The VCAA publishes every school's previous study score distribution to the school; the subject coordinator knows what rank in the class produced a 40 last year. Ask.
• Past exams marked to the examination reports. The examination report gives the state's mean mark for every question. A student who consistently scores above the state mean on each question of the last three exams is above 30; one at the mean on the 2-mark questions and below it on the 4-mark questions is at about 30; the top 9 percent of the state on a VCE exam is usually above 80 percent of the marks in the sciences and above 85 in the mathematics studies. The past exams page has every paper and report.

How the ATAR is calculated from study scores

Three steps, all VTAC's, and all with published numbers (the full tables are on the VCE scaling page):

1. Scale each study score. VTAC compares each study's students with their results in their other studies. In 2025 a 35 became 48 in Specialist Mathematics, 41 in Methods, 39 in Chemistry, 37 in Physics, 36 in Biology, 34 in Psychology, 33 in English and General Mathematics, 29 in Food Studies.
2. Build the aggregate. The best scaled score in English, EAL, English Language or Literature, plus the next three highest (at most two from one study area group), plus 10 percent of the fifth and sixth.
3. Convert with the year's table. In 2025: 120.42 for 70.00, 135.65 for 80.00, 155.19 for 90.00, 169.85 for 95.00, 192.10 for 99.00, 211.42 for 99.95.

The ATAR estimator

Enter up to six Units 3 and 4 studies with a study score for each (a real one, or the one you are aiming at). The estimator scales each with VTAC's 2025 table (interpolating between the published points), applies the primary-four and increment rules with the English and Mathematics group limits, and reads the ATAR from the 2025 aggregate table. It is an estimate: the 2026 tables will differ by a little, and the study scores you type are the whole of the uncertainty.

What the estimator teaches faster than any explanation: change one study score by five and watch the ATAR. At an aggregate near 155, five study-score points in Methods are about six scaled points, which is about 2.5 ATAR points; the same five points in Psychology are about five scaled points, about 2 ATAR points; five points in a sixth study that is only an increment are worth half a scaled point, about 0.2 of an ATAR. The ATAR is made in the primary four, and the English study is always one of them.

How we use this with Year 11 and 12 students

The estimator is the first thing we do with a new VCE student, with their current SAC ranks turned into honest study-score guesses by the subject coordinator's history, so the family sees which study moves the ATAR and which does not. Then the work is in two places the score is actually made: the exam, which is half or more of every study and sets the moderated level of the SACs, and the rank in the primary four studies. We teach 1-on-1 online in Melbourne's after-school hours in Methods, Specialist, Chemistry, Physics, Biology and English, with every past exam marked to the examination report's mean per question. The first 30-minute class is free; send the study list and the last SAC results on WhatsApp or the contact page. The full scaling tables are on VCE scaling explained, the papers on VCE past exams, and the city page is Melbourne.

Download the study score and ATAR sheet with the estimate worksheet (PDF)

Sources: VCAA, VCE Administrative Handbook, Score aggregation (the graded assessments, statistical moderation, standardising, ranking and the mean-30, standard-deviation-7 scale); the VCAA study designs for the weightings; VTAC, 2025 Scaling Report and 2025 Aggregate to ATAR Table (11 December 2025) and the ATAR and Scaling guide (the primary four, the increments and the study-area limits). Read on 25 October 2026. The estimator uses the 2025 tables; VTAC publishes the 2026 tables in December 2026.

Questions parents ask

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