What Is the Singapore-Cambridge Secondary Education Certificate (SEC)?
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Parent-friendly guide to Singapore's Secondary Education Certificate (SEC) from 2027, including G1, G2, G3, O-Level and N-Level transition notes, and science practical links.
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- Start Here
- What SEC Means
- What Official Sources Say
- What Changes From 2027
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.
Start Here
| If you have... | Read this first | What to do next |
| 1 second | 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. |
| 10 seconds | 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. |
| 100 seconds | 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:
