From the 2028 Post-Secondary Admissions Exercise (PSE), which replaces the JAE for SEC students, Junior College admission is computed on L1R4 rather than L1R5: your first language plus four relevant subjects instead of five. Fewer counted subjects means each one carries more weight, and that changes which subject is worth rescuing first.
The 2028 rules, as MOE has set them
- L1 is G3 English or Higher Mother Tongue.
- R1 is the best Humanities subject, R2 the best Mathematics or Science subject, and R3 the best remaining Humanities, Mathematics or Science subject.
- R4 is the best of any remaining G3 subject.
- Junior College needs an L1R4 gross aggregate of 16 or below, down from an L1R5 of 20. Millennia Institute allows up to 20.
- Every counted subject must be taken at G3. MOE treats an O-Level grade as equivalent to G3.
- Minimum grades for JC: G3 English A1 to C6, G3 Mathematics or Additional Mathematics A1 to D7, and Mother Tongue at G3 A1 to D7, G2 grade 1 to 5 or G1 grade A to D (or Higher Mother Tongue A1 to E8).
- Bonus points: up to 3, plus 2 for a language elective programme, subtracted from the gross aggregate. Our LEAPS 2.0 guide explains how CCA records earn them.
- If a student takes both Mother Tongue and Higher Mother Tongue in the same language, only one of the two can count.
Polytechnic admission changes in the same year: ELR2B2 stays, but only the second-best other subject (B2) can be taken at G2. English, R1, R2 and B1 must be at G3, and the net aggregate cut-off moves from 26 points to 22.
You can work out both scores with our L1R5 and L1R4 calculator. The full criteria are on MOE's changes from 2028 page.
L1R5 and L1R4 side by side
| L1R5 | L1R4 |
|---|
| Subjects counted | First language plus 5 relevant subjects | First language plus 4 relevant subjects |
| Total counted | 6 | 5 |
| First applies | Through the 2027 JAE | From the 2028 PSE |
| Effect of one weak grade | Diluted across 6 subjects | Concentrated across 5 |
The arithmetic is the point. Under L1R5, a single poor grade is one of six contributions to an aggregate. Under L1R4 it is one of five. The same grade costs more.
What this changes in practice
Under L1R5, a common and sensible strategy was breadth: take enough subjects that a weak one could be dropped from the count. Under L1R4 the counted set is tighter, so the calculation shifts toward depth.
Two consequences follow.
Your weakest counted subject matters more. The highest-return revision hour is the one spent on the weakest subject that will be counted, not the strongest. Lifting a B4 to a B3 moves the aggregate by the same amount as lifting an A2 to an A1, and is considerably easier.
Subject level choice is now a planning decision. A student aiming for a Junior College science track needs their core subjects at G3, because the counted set has less room to absorb a subject taken at a lower level. Choosing a level should follow genuine strength and the intended post-secondary course, not pride and not peer pressure. Our guide to choosing G1, G2 or G3 sets out how to make that call.
What has not changed
The principle is the same one that has always governed JAE: your best language and your best relevant subjects, converted to points, decide which doors open. Lower aggregate scores remain better. Cut-off points are still set by demand each year rather than fixed in advance, so a cut-off from a previous year is a guide and not a promise.
MOE publishes how secondary posting and admission work on its Full Subject-Based Banding page, and the Post-Secondary Admissions Exercise (PSE) details for 2028 are on MOE's PSE page.
Who this applies to
L1R4 first applies at the 2028 Post-Secondary Admissions Exercise (PSE), the first admissions exercise for students with SEC results. A student sitting the final O-Level in November 2026 is admitted under L1R5 at the 2027 JAE. The SEC 2027 timeline shows which cohort a child falls into.
