Investigating Science HSC Scaling 2026 (NSW)
Under UAC’s 2025 HSC scaling, Investigating Science had an average scaled mark of about 20.5 per unit (out of 50), scaling higher than 19% of NSW HSC courses. At the median, students had an HSC mark of 38 per unit and a scaled mark of 20. Scaled marks — not raw HSC marks — are what UAC adds up to build your ATAR.
Investigating Science 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) | 47 | 42.8 |
| Top 10% (90th) | 44.5 | 35.5 |
| Top 25% (75th) | 41.5 | 28.9 |
| Median (50th) | 38 | 20 |
| Bottom 25% (25th) | 34 | 11.5 |
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. Investigating Science scales modestly: its average scaled mark of 20.5 is higher than 19% of NSW HSC courses, so it contributes less per unit than higher-scaling courses.
See how the HSC ATAR is calculated for how these scaled marks are combined into your aggregate.
Investigating Science 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.