A-Level Bell Curve Singapore: What SEAB Confirms About H2 Grades (2026)

Q: Is there an A-Level bell curve in Singapore, and what raw mark is needed for an A?
A: SEAB publishes the A-Level grade scale, but the current official pages checked on 4 August 2026 do not publish raw subject grade boundaries, subject-level distinction rates, or a formula that converts a raw mark into a grade. That means no public table can reliably tell you that a particular raw mark guarantees an A in H2 Maths, Physics, Chemistry, or Biology.

TL;DR Treat online A-grade cut-offs and subject distinction rates as unverified estimates unless they are tied to an official release. Use official syllabus objectives, paper weightings, marking feedback, and timed practice to set your targets instead.

What SEAB officially confirms

SEAB's current grading-system page states that the Singapore-Cambridge GCE A-Level examination uses a seven-point grading system.

This tells you how final subject results are reported. It does not reveal the raw-score boundary for each grade in a particular subject or year.

The 2025 A-Level results release adds one useful cohort-level fact: 10,393 of 10,977 school candidates, or 94.7%, obtained at least three H2 passes together with a pass in General Paper or Knowledge and Inquiry. This is a broad cohort outcome. It is not an A-rate for any individual subject.

What the checked official sources do not publish

The current SEAB pages checked for this guide do not provide:

• raw marks needed for A, B, C, D, or E in each H2 subject;
• subject-level national distinction rates;
• JC-by-JC distinction rates;
• a fixed percentage of candidates assigned to each grade;
• a public formula for changing grade boundaries after an examination; or
• a reliable conversion from a school prelim grade to an A-Level grade.