Mathematics Extension 2 HSC Scaling - 2026 Planning with 2025 UAC Data
For 2026 planning, the latest available UAC scaling data is the 2025 HSC report. In that report, Mathematics Extension 2 had an average scaled mark of about 43.4 per unit (out of 50), scaling higher than 99% of NSW HSC courses. At the median, students had an HSC mark of 43.5 per unit and a scaled mark of 44.7. Scaled marks - not raw HSC marks - are what UAC adds up to build your ATAR.
Mathematics Extension 2 scaling table (2025 UAC)
HSC and scaled marks at each percentile, per unit (out of 50). A 2-unit course contributes twice these marks to your 10-unit aggregate.
| Percentile | HSC mark /50 | Scaled mark /50 |
|---|---|---|
| Top 1% (99th) | 49.5 | 49.6 |
| Top 10% (90th) | 48 | 48.3 |
| Top 25% (75th) | 46.5 | 46.9 |
| Median (50th) | 43.5 | 44.7 |
| Bottom 25% (25th) | 37.5 | 41.5 |
What this means for your ATAR
Your ATAR is built from your best 10 units of scaled marks - your best 2 units of English plus your best 8 units. Mathematics Extension 2 scales well: its average scaled mark of 43.4 is higher than 99% of NSW HSC courses, so it tends to pull your aggregate up relative to lower-scaling courses.
See how the HSC ATAR is calculated for how these scaled marks are combined into your aggregate.
Mathematics Extension 2 scaling FAQ
Figures are per unit (out of 50) from the UAC Report on the Scaling of the 2025 NSW HSC (Table A3). UAC publishes these as percentile statistics, not a mark-to-scaled conversion table - for any HSC mark there is a range of scaled marks. Re-stamped when UAC releases the new report each year.