Replace one large guess with observable inputs
Before results day, nobody knows your final HSC marks. But you may know your course rank, cohort size and school. Those facts can be compared with historical school course outcomes to estimate several plausible HSC mark scenarios.
Why the result is still uncertain
Internal rank is only a proxy for final assessment rank. Public data does not reveal every student’s rank to mark pathway, the exact gaps between students or the strength of the current cohort. Your HSC exam performance can also shift the final result.
The useful output is a range
ATAR Forecast estimates course marks using historical school outcomes, then uses published, year matched UAC scaling data to approximate ATAR scenarios. Published tables do not reproduce UAC’s exact raw mark calculations. The range is a planning estimate, not a validated probability interval or a guaranteed floor and ceiling.
Sources and editorial notes
Founder of ATAR Forecast. These guides explain school ranks, HSC results and the assumptions behind the forecasting tool, with links to NESA and UAC sources. These guides explain the process; NESA and UAC remain the official authorities.
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An experimental estimate, not an official ATAR calculation.