What Is the Singapore-Cambridge Secondary Education Certificate (SEC)?

The Singapore-Cambridge Secondary Education Certificate (SEC) is the national secondary examination certificate starting in 2027. SEAB says the GCE N(T), N(A), and O-Level examinations will be combined and renamed as SEC under Full Subject-Based Banding, with students taking subjects at G1, G2, or G3 levels.

Use this page for the big picture. If you are preparing for the 2026 O-Level or N-Level examinations, the current O-Level and N-Level pages are still the right place for dates, subject codes, and practical preparation.

• SEC is the 2027 national secondary certificate that brings N(T), N(A), and O-Level examinations under one certificate: Check whether your child is preparing for the 2026 legacy exams or the 2027 SEC system.
• Students take SEC subjects at G1, G2, or G3 levels, and the certificate shows the subjects and levels taken: For science, keep the 2026 O-Level subject codes in view while tracking the official 2027 SEC syllabus pages.
• O-Level and N-Level wording still matters for 2026 searches, but younger cohorts will need SEC, G1, G2, and G3 language: Start with this explainer, then read the O-Level/N-Level transition comparison: https://eclatinstitute.sg/blog/o-level-n-level-to-sec-singapore-2027.

What SEC Means

From 2027, SEAB says the Singapore-Cambridge GCE for the N(T), N(A), and Ordinary Levels will be combined and renamed as the Singapore-Cambridge Secondary Education Certificate (SEC). This sits within Singapore's Full Subject-Based Banding shift.

Under SEC, students sit subjects at the subject level that applies to them:

This is Eclat's explanation of the official structure. For the official wording and policy details, use SEAB's SEC page:

Reviewed by

Marcus Pang·Managing Director (Maths)