HSC Maths Extension 1 Scaling 2026

Your HSC Maths Extension 1 mark (out of 50)

/ 50

Extension 1 is a 1-unit course, so the HSC mark is reported out of 50.

Enter a mark between 0 and 50.

Estimated scaled mark

0.0 / 50

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Scales up vs other subjects

Subject median: 41.5/50

Estimate based on UAC's 2025 percentiles for Maths Extension 1. Your official scaled mark is set by UAC and released with your ATAR in December.

Quick answers

How is HSC Maths Extension 1 scaled?

UAC scales your raw Maths Extension 1 mark against how the whole Maths Extension 1 cohort performs across all of their subjects. A strong cohort lifts a subject; a broader one lowers it. Maths Extension 1's average scaled mark is about 39.7/50 per unit versus roughly 25 across all subjects, so it scales up.

Does Maths Extension 1 scale up or down?

Relative to other subjects, Maths Extension 1 scales up. Its cohort's average scaled mark is about 39.7/50 per unit, against about 25 across the whole state. HSC marks are reported high. Most students sit in Bands 4 to 6. So scaled marks come out lower than HSC marks in almost every subject. What matters is how a subject's scaled marks compare with others. The raw drop in the number is not the point.

What's a good HSC Maths Extension 1 mark?

The median student scores about 42/50, which scales to roughly 41.5/50. Beat that and you're in the top half of the cohort; a mark in the top 10% sits near 48/50.

What raw mark do I need for an E4 in Maths Extension 1?

An E4 is the top band (45–50) in this 1-unit course. NESA sets the raw cut-off each year by aligning to standards, so it shifts annually. This tool estimates your scaled mark, which is what feeds your ATAR.

Reference

HSC Maths Extension 1 scaling table (2025 data)

Approximate scaled mark and percentile for a given HSC Maths Extension 1 mark, from UAC's 2025 report. Scaled marks are shown per unit (out of 50).

HSC mark (/50)	Scaled mark (/50)	Percentile
30	31.4 /50	22th
35	36.6 /50	25th
40	40.1 /50	43th
43	42.4 /50	56th
46	44.9 /50	75th
50	50.0 /50	99th+

Source: UAC — Preliminary Report on the Scaling of the 2025 NSW HSC, Table A3. Updated February 2026.

How it works

From raw mark to scaled mark

STEP 1

Enter your mark

Type your raw or predicted HSC Maths Extension 1 mark out of 50. Predicted is fine before results day.

STEP 2

UAC scaling applied

Your mark is mapped onto UAC's 2025 scaling curve for Maths Extension 1, drawn from the official percentiles.

STEP 3

See your scaled mark

Get your estimated scaled mark out of 50, your percentile, and how Maths Extension 1 scales versus other subjects.

About this HSC Maths Extension 1 scaling calculator

This tool estimates the scaled mark you'd receive in HSC Maths Extension 1 from your raw HSC mark, using UAC's Preliminary Report on the Scaling of the 2025 NSW HSC — the most recent official scaling data. It's the same source behind our NSW ATAR calculator, so your Maths Extension 1 scaled mark here lines up with your full ATAR estimate there.

In 2025, Maths Extension 1 scales up relative to other subjects: its average scaled mark was about 39.7/50 per unit, versus roughly 25 across the whole state — one of the strongest-scaling subjects in the state. HSC marks are reported high. Most students sit in Bands 4 to 6. So scaled marks come out lower than HSC marks in almost every subject. What matters is how a subject's scaled marks compare with others. The raw drop in the number is not the point. Scaling isn't a measure of how “hard” the subject is; it reflects how the Maths Extension 1 cohort performs across all of their subjects. So two students with the same scaled mark would rank equally. That holds even across different subjects. It assumes every student had sat both.

One point to be clear about. UAC says there is no single scaled mark for a given HSC mark. Each HSC mark can come from a small range of raw marks. So read this as a close estimate for planning, not an exact figure. To see how Maths Extension 1 combines with your other subjects, use the NSW ATAR calculator; to compare subjects, browse all HSC scaling calculators or read our methodology.

HSC Maths Extension 1 scaling — common questions

I got 45 in HSC Maths Extension 1 — what scaled mark is that?

A raw HSC mark of 45 in Maths Extension 1 scales to roughly 44 out of 50 (a per-unit scaled mark). For comparison, a raw 40 scales to about 40, and a raw 48 to about 47. These are estimates from the latest UAC scaling pattern — the exact figure shifts a little each year with the cohort.

Does HSC Maths Extension 1 scale up or down?

Maths Extension 1 is one of the stronger-scaling HSC subjects. Its median student's scaled mark is about 42/50, well above the roughly 25/50 state average, because the Maths Extension 1 cohort is academically strong. In absolute terms a scaled mark still sits below the raw HSC mark through the middle of the range — as it does in almost every subject — but Maths Extension 1 loses far less than weaker-scaling subjects, which is what people mean when they say it 'scales up'.

Why is my scaled mark lower than my HSC mark in Maths Extension 1?

Because the two numbers measure different things. Your raw HSC mark (out of 50) is aligned to performance bands; your scaled mark (out of 50 per unit) places you against every student in the state on one common scale, adjusted for how strong the Maths Extension 1 cohort is. A raw 45 in Maths Extension 1, for instance, becomes about 44/50. Scaled marks sitting below raw HSC marks in the middle of the range is normal and happens in nearly every subject.

What raw mark do I need in Maths Extension 1 for a scaled mark of 40?

A scaled mark of about 40/50 is a strong contribution to your ATAR aggregate. In Maths Extension 1, reaching it takes a raw HSC mark of roughly 40 out of 50. Lifting your raw mark above that pushes your scaled mark higher still, up to about 50/50 at the very top.

Is HSC Maths Extension 1 worth taking for a high ATAR?

From a pure scaling view, yes — Maths Extension 1 is among the better-scaling subjects. But the catch matters: scaling rewards the subject only if you actually perform well in it. A middling mark in Maths Extension 1 scales worse than a high mark in a 'weaker' subject. Choose it if it's a genuine strength, not just for the scaling.

What HSC mark puts me in the top 10% of Maths Extension 1?

Roughly the top 10% of Maths Extension 1 students score a raw HSC mark of about 48 or higher. Your position within the cohort is what drives your scaled mark — the stronger your rank, the higher your scaled result.

How is HSC Maths Extension 1 scaled for the ATAR?

UAC scales your Maths Extension 1 marks (exam plus moderated assessment) so they compare fairly with every other subject. The scaling reflects how academically strong the Maths Extension 1 cohort is — the stronger the field, the higher the subject scales. It's your scaled marks, not your raw HSC marks, that feed into your ATAR aggregate.

HSC Maths Extension 1 scaling — see your scaled mark in seconds.