What an ATAR actually measures
ATAR · Hayzum editors · 31/08/2026 · Updated 31/08/2026
An ATAR is a percentile rank of a Year 12 cohort, reported from 0 to 99.95. It is not a mark out of 100 and it is not issued by Hayzum.
Each state and territory uses its own senior secondary certificate and its own tertiary admissions centre. Scaling adjusts subject results so students can be compared across different study combinations.
Hayzum calculators follow the public contribution patterns (for example, English plus next three plus 10% increments in Victoria) and then map an illustrative aggregate to a rank. They cannot reproduce confidential cohort tables.
If you are applying for university, treat every calculator output as a planning figure and confirm rules with UAC, VTAC, QTAC, TISC, SATAC, or TASC.
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Hayzum editors
Education editor
We write calculator explainers for Australian students.
Questions from this guide
1 question · Reviewed 31 Aug 2026
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