What the SEC is
The SEC is the single national certificate that replaces the separate GCE O-Level and N-Level certificates from 2027. It follows directly from Full Subject-Based Banding: since students now take each subject at their own band (G1, G2, or G3) rather than sitting in one stream, it no longer makes sense to issue stream-based certificates. Instead, one certificate lists each subject with the subject level it was examined at.
The examinations themselves remain jointly set by MOE and Cambridge, in a common national exam period. A subject taken at G3 is examined at the same standard as today's O-Level paper; G2 corresponds to the former N(A) standard.
Who is affected, and when
- 2024 — first Full SBB cohort enters Sec 1. No more Express / N(A) / N(T) streams.
- 2026 — that cohort is in Sec 3 now. Students one year above them (Sec 4 in 2026) still sit the final O- and N-Level examinations this year.
- 2027 — first SEC examination. SEAB awards the certificate to a candidate who obtains at least one qualifying grade: E8 or better for a G3 subject, Grade 5 or better for a G2 subject, or Grade D or better for a G1 subject.
- 2028 — first Post-Secondary Admissions Exercise (PSE) using the revised JC and MI criteria below.
How JC admission changes: L1R5 → L1R4
From the 2028 Post-Secondary Admissions Exercise (PSE), JC admission uses L1R4: a first-language subject and four relevant subjects, all at G3. The gross aggregate must not exceed 16 for JC or 20 for MI, and specific-subject grade requirements also apply. See MOE for the subject combinations, bonus-point rules and exceptions: MOE — JC and MI admission criteria.
L1R4 counts five subjects in total (the first language plus four relevant subjects) instead of L1R5’s six, so each counted subject carries a little more weight. Which subjects count, and at which level, is set out on MOE’s page above.
How polytechnic admission changes
Polytechnic admission continues to use the ELR2B2 aggregate — English, two relevant subjects and two best subjects. The criteria for the 2028 Post-Secondary Admissions Exercise, including the qualifying aggregate and which subject levels may be counted, are published by MOE on its PSE pages; check there rather than relying on summaries.
What this means in practice
- G3 subject status matters more, earlier. Whether a subject counts toward L1R4 at G3 is decided by the band a student holds through Sec 3–4. Band transfer windows exist at Sec 1 to Sec 3 — the earlier a borderline student consolidates, the more options stay open.
- The exam standard is not getting easier. G3 papers carry the O-Level standard forward. Nothing about the SEC reduces content or rigour.
- Syllabuses are unchanged by the certificate switch. What changes is the certificate and the admission arithmetic, not what is taught in Math or Science.
Common questions
Is the O-Level being abolished? The certificate is replaced; the standard is not. G3 subjects are examined at the same standard as today's O-Levels, still jointly examined by MOE and Cambridge.
Who is the first SEC cohort? Students who entered Sec 1 in 2024 — Sec 3 in 2026, Sec 4 in 2027.
What is L1R4 and when does it start? The JC admission aggregate from the 2028 Post-Secondary Admissions Exercise (PSE): a first-language subject plus four relevant subjects, all taken at G3 — five subjects in total — with a gross aggregate of at most 16 for JC (20 for MI). Specific-subject grade requirements also apply.
Does the SEC change polytechnic admission? Polytechnic admission continues to use ELR2B2; MOE publishes the criteria for the 2028 Post-Secondary Admissions Exercise on its PSE pages.
Do G2 students still receive a separate N-Level certificate? No. From 2027 there is one certificate, the SEC, listing each subject at the subject level taken; SEAB awards it to a candidate with at least one qualifying grade.
Further reading
For how banding itself works, see G2 vs G3 — Singapore secondary banding explained, and for choosing tuition across the two bands, our G2 vs G3 Math tuition guide.
Where this comes from. The SEC, Full Subject-Based Banding and the G1/G2/G3 subject levels are set by MOE — see MOE's Full Subject-Based Banding FAQ. Syllabuses and papers are set by SEAB. Last checked 13 Sep 2026 (SEAB SEC page; MOE JC and MI admission criteria for the 2028 PSE).