Does Maths Standard scale well in the HSC? No, not compared with the other maths courses. In the 2025 HSC, Mathematics Standard 2 finished with a mean scaled mark of 23.3 out of 50, against 31.9 for Mathematics Advanced, 39.7 for Extension 1 and 43.4 for Extension 2. That is the honest answer, and it is the one every Year 10 and Year 11 family deserves before they lock in a subject pattern. But the number on its own is misleading, and choosing Advanced for the scaling alone is one of the most expensive mistakes we see students make.
Here is what the official 2025 data actually says, where it is commonly misread, and how to decide between Standard and Advanced without guessing.
What is the mean scaled mark for Maths Standard?
The Universities Admissions Centre publishes a scaling report every year. In the Report on the Scaling of the 2025 NSW HSC, Table A3 gives the following mean scaled marks per unit, all out of 50:
| Course | Students (2025) | Mean HSC mark | Mean scaled mark |
|---|---|---|---|
| Mathematics Standard 1 (Examination) | 3,737 | 35.5 | 13.9 |
| Mathematics Standard 2 | 31,762 | 36.0 | 23.3 |
| Mathematics Advanced | 16,809 | 39.6 | 31.9 |
| Mathematics Extension 1 | 9,279 | 39.7 | 39.7 |
| Mathematics Extension 2 | 3,844 | 41.5 | 43.4 |
So Mathematics Standard 2 sits about 8.6 scaled marks per unit below Mathematics Advanced. Across two units, that is a gap of roughly 17 marks in the ATAR aggregate, which is enough to move an ATAR by several points for a student in the middle of the range.
Why does Maths Standard scale lower than Maths Advanced?
This is the part most subject-selection guides get wrong. Scaling does not measure how hard a course is. It measures how the group of students in that course performed across all of their other subjects. A course scales high when the people who choose it are, on average, strong right across their HSC.
Mathematics Advanced attracts a large share of students who are also doing Extension maths, Chemistry, Physics and English Advanced. Mathematics Standard 2 is chosen by a much broader cross-section of the state, including many students whose strengths sit outside maths entirely. The scaled mean follows the candidature, not the syllabus. Our full explanation of the mechanism is in our guide on how to read the HSC scaling report.
How many Maths Standard students actually get a high scaled mark?
Averages hide the ceiling, and the ceiling is what ambitious students care about. UAC also publishes the distribution of scaled marks. In 2025:
- 4.5% of Mathematics Standard 2 students achieved a scaled mark of 40 or above, compared with 20.6% of Mathematics Advanced students.
- 15.4% of Standard 2 students reached 35 or above, compared with 42.6% of Advanced students.
- The highest scaled mark recorded in Mathematics Standard 2 was 47.1, so a near-perfect scaled result is possible but rare.
Read that carefully. Standard 2 does not have a low hard cap. It has a thin top tail. A student who genuinely finishes near the top of Standard 2 still scales respectably; the problem is that most students in the course do not finish near the top.
What does a typical Maths Standard mark scale to?
This is the single most useful table in the whole report, and almost nobody shows it. For Mathematics Standard 2 in 2025:
| Percentile in the course | HSC mark per unit | Scaled mark per unit |
|---|---|---|
| 99th | 47.5 | 42.9 |
| 90th | 44.5 | 37.3 |
| 75th | 40.5 | 31.5 |
| 50th (median) | 36.5 | 23.2 |
| 25th | 32.0 | 15.1 |
The median Standard 2 student earns an HSC mark of 36.5 per unit, which looks like 73 out of 100 on a Record of Achievement, and that converts to a scaled 23.2. Meanwhile, 29.8% of Standard 2 students finish with an HSC mark of 40 or more per unit, which is a Band 5 or 6, but only 4.5% land a scaled 40. That gap between a good-looking HSC mark and a modest scaled mark is why families are so often blindsided in December.
UAC is explicit that this table is not a conversion chart. A given HSC mark can correspond to a range of raw marks and therefore a range of scaled marks. Treat it as a guide to the shape of the course, not a calculator.
Should you switch from Maths Standard to Maths Advanced for the scaling?
Only if you can genuinely hold a competitive rank in Advanced. Here is the arithmetic that matters, using the 2025 figures.
An illustrative comparison. Consider two students with the same underlying ability in maths. Student A stays in Standard 2 and finishes at the 90th percentile of that course, scaling to 37.3 per unit. Student B moves up to Advanced but, out of their depth, finishes at the 25th percentile of Advanced, which scaled to 25.9 per unit in 2025. Student A comes out roughly 11 scaled marks per unit ahead, or about 23 marks across two units. The lower-scaling course won because the student was placed correctly in it.
Now flip it. A student who can hold the median of Advanced scales to 33.2, comfortably ahead of the 90th percentile of Standard 2. The rule of thumb: move up only if you expect to finish in at least the middle of the Advanced cohort. If Advanced is going to consume the study hours that your other five subjects need, staying in Standard 2 and topping it is usually the better ATAR play.
Does Maths Standard 1 count towards the ATAR?
It can, but only if the student sits the optional Mathematics Standard 1 Examination. Without that examination, the course does not contribute to ATAR eligibility or to the ATAR calculation. Where students do sit it, the scaling is very low: a mean scaled mark of 13.9 in 2025, the lowest of the maths courses.
One genuinely important change: UAC removed the Category A and Category B classification of ATAR courses in 2025. The old rule requiring at least 8 units of Category A courses no longer applies. Plenty of school handbooks and tutoring blogs have not caught up with this, so check the current UAC report rather than an older summary.
Is Maths Standard a bad choice for a high ATAR?
No. Around 4.5% of a course of nearly 32,000 students is still well over a thousand students a year achieving a scaled 40 or better in Standard 2. Students reach the high 90s with Standard 2 in their pattern every year. What they do not do is rely on it to carry the aggregate. They pair it with subjects that scale strongly for them and they finish at the top of Standard 2 rather than the middle.
If your ambition is the top band of the state, our guide on what it takes to reach a 99 ATAR sets out the realistic subject patterns, and what ATAR most students actually get puts the whole distribution in perspective.
How do the other big courses compare?
Mathematics Standard 2 is the second-largest course in the state after English Standard, so it is worth seeing where it sits among other high-enrolment subjects on 2025 scaled means: Chemistry 32.0, English Advanced 32.8, Mathematics Advanced 31.9, Biology 26.2, Legal Studies 25.3, Modern History 25.0, Business Studies 23.9, Mathematics Standard 2 23.3, PDH&PE 22.8, English Standard 20.4.
Standard 2 is not an outlier at the bottom. It sits in the same band as Business Studies and PDH&PE, and above English Standard, which more than 33,000 students take. For the full picture, see our rankings of the highest-scaling HSC subjects and the worst-scaling HSC subjects.
When should you make the Standard or Advanced decision?
Earlier than most families do. The decision is normally made in Year 10 for a Year 11 start, and the practical checkpoint is the Year 11 half-yearly and yearly results. A student sitting in the bottom third of Advanced at the end of the Preliminary year is usually better off moving to Standard 2 for the HSC year, where they can compete for the top of the cohort. Schools generally allow that move; moving upwards mid-course is far harder.
Work through the whole pattern rather than one subject at a time. Our subject selection guide for the HSC and ATAR covers unit requirements and how the best 10 units are counted.
Can tutoring change the outcome in Maths Standard?
In Standard 2, yes, and more reliably than in most courses, because the mark distribution is wide. The difference between the 50th and 90th percentile of Standard 2 is 8 HSC marks per unit and roughly 14 scaled marks per unit. Closing part of that gap is a matter of exam technique, working consistently through past papers, and fixing the topics that repeatedly cost marks, particularly financial mathematics, statistical analysis and rates.
Our tutors work with Standard and Advanced students across NSW, in person and online. If you want a straight answer on whether your child should stay in Standard 2 or move up, book a first lesson today and we will look at their actual results with you. And if it is the wider HSC year you are planning, our HSC tutoring in Sydney page explains how the programme runs.
Frequently asked questions
Does Maths Standard scale down?
Yes. In 2025 the mean HSC mark in Mathematics Standard 2 was 36.0 per unit and the mean scaled mark was 23.3, so marks moved down substantially on average. This happens because scaling reflects the overall academic strength of everyone in the course, not the difficulty of the syllabus.
What is the highest scaled mark you can get in Maths Standard 2?
The highest scaled mark recorded in Mathematics Standard 2 in 2025 was 47.1 out of 50. About 4.5% of the course achieved a scaled mark of 40 or above.
Is Maths Advanced always better than Maths Standard for the ATAR?
No. Advanced scales higher on average, but your scaled mark depends on your position within the course. A student at the 90th percentile of Standard 2 scaled to 37.3 in 2025, well ahead of a student at the 25th percentile of Advanced, who scaled to 25.9.
Does Mathematics Standard 1 count towards the ATAR?
Only if the student sits the optional Mathematics Standard 1 Examination. Note that UAC removed the Category A and Category B classification of ATAR courses in 2025, so the old 8-unit Category A requirement no longer applies.
Can I still get a high ATAR with Maths Standard?
Yes. Students achieve ATARs in the 90s with Mathematics Standard 2 every year. The pattern that works is finishing near the top of Standard 2 while your other subjects carry the aggregate, rather than relying on Standard 2 to lift it.