Frequently asked questions

Knowing a rough ATAR ahead of time helps you plan realistically — which university courses you’re likely to be competitive for, whether you should look at alternative entry pathways, and what to put as your preferences. It turns an anxious wait into an informed one.

For SACE, select at least five different subjects with a predicted grade for each — the calculator then works out which of those count towards your aggregate. Other states have their own minimums (for example, HSC needs enough subjects to reach 10 units), shown on each calculator page.

Depending on your state, you may be eligible for extra points added to your selection rank — for example, SATAC’s schemes cover school-based or individual equity, plus a language/literacy/maths bonus for specific subjects. These points affect which courses you can get into, but they never change your actual ATAR.

It’s a genuine estimate, not a guarantee. Within any single grade there’s a real spread — a high A- and a low A- both round to the same grade but can scale differently — so no calculator can be exact down to the decimal. Averaged across many students, estimates from tools like this tend to land within a point or two of the real result, and the accuracy ultimately depends on how close your predicted grades are to your actual ones.

Where a state publishes real scaling data, we use it directly — for example, SACE’s per-subject scaling table and SATAC’s official aggregate-to-ATAR conversion. Where a state doesn’t publish this (like Queensland’s iterative scaling process, or WA since TISC stopped releasing scaling reports), we use a reasonable approximation and say so clearly on that calculator.

Different tools use different underlying data and different approximations for the parts that aren’t officially published. That’s normal — treat any calculator’s output as a range to plan around, not a fixed number.

Scaling compares the students taking a subject against how those same students perform across all their other subjects — not the subject’s difficulty in isolation. A subject with a strong, consistent cohort scales up; a subject with a wide spread of ability scales down. See each state’s Scaling Data page for the real numbers where they’re published.

Scaling only helps if you’re actually performing well in the subject. A strong result in something you’re genuinely good at will almost always beat a mediocre result in a subject that scales well on paper. Use scaling data to break ties between subjects you’re equally capable in, not as the main reason to pick one.

Head to the community chat — it’s open to anyone using this site, and it’s a good place to compare notes with other students working through the same subjects and states.