The ATAR is a rank, not a mark out of 100
The ATAR places you relative to the relevant age group in NSW. For example, an ATAR of 80 does not mean you answered 80 percent of HSC questions correctly. It indicates a relative position in the ranking system, based on the scaled aggregate of eligible course results.
ATARs run from 0.00 to 99.95 in increments of 0.05. Because it is a rank, small numeric differences near the top do not represent equal differences in raw marks or knowledge.
“Good” depends on the pathway you want
A useful target is one connected to the entry requirements of courses you are considering, not a number chosen only for status. University course profiles can show previous selection ranks, but offers and requirements can change. Some applicants also receive adjustment factors or use different qualifications, so the lowest previous offer is not a guarantee of a future offer.
Turn a target into something actionable
Check current prerequisites and admissions information for a few realistic course options. Then focus on the course work you can influence: upcoming assessments, exam preparation and understanding where you are losing marks. An ATAR forecast can help frame scenarios, but it cannot tell you whether you will receive a university offer.
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.