O-Level and N-Level to SEC: What Changes in 2027?
In one line
Clear comparison of Singapore's O-Level and N-Level transition to the Singapore-Cambridge Secondary Education Certificate (SEC) from 2027, with G1/G2/G3 and science practical li...
Planning a revision session? Use our study places near me map to find libraries, community study rooms, and late-night spots.
Read in layers
1 second
Read the summary above.
10 seconds
Scan the first few sections below.
100 seconds
Jump into the section that matches your decision.
- Start Here
- Before 2027 Vs From 2027
- O-Level To SEC
- N-Level To SEC
O-Level and N-Level search terms still matter in 2026. From 2027, the national secondary examination certificate is the Singapore-Cambridge Secondary Education Certificate (SEC). SEAB says the GCE N(T), N(A), and O-Level examinations will be combined and renamed as SEC, with subjects taken at G1, G2, or G3 levels.
The practical takeaway is simple: keep using O-Level and N-Level pages for 2026 dates, results, subject codes, and practical prep. Use SEC wording for younger cohorts preparing for the 2027 system.
Start Here
| If you have... | Read this first | What to do next |
| 1 second | O-Level and N-Level names are being replaced by SEC from 2027. | Do not rename your 2026 revision plan if you are sitting the 2026 exams. |
| 10 seconds | SEC uses G1, G2, and G3 subject levels, with one certificate showing the subjects and levels taken. | Learn the new terms, but keep the current O-Level or N-Level page for current-year dates. |
| 100 seconds | The transition affects wording, certificate structure, results timing, and how families search. | Use this comparison, then read the full SEC explainer: https://eclatinstitute.sg/blog/secondary-education-certificate-sec-singapore-2027. |
Before 2027 Vs From 2027
| Question | 2026 and before | From 2027 |
