L1R4 Explained: How JC Admission Changes From 2028

From the 2028 Joint Admissions Exercise, 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.

L1R5 and L1R4 side by side

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 Joint Admissions Exercise details are released each cycle.

Who this applies to

L1R4 first applies at the 2028 Joint Admissions Exercise, which is the first cohort receiving 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.

Common questions

Does L1R4 make Junior College harder to get into?
Not by itself. Every applicant in that cohort is scored the same way, and cut-offs move with demand. What changes is the strategy: a weak counted subject costs more than it used to.

Which subjects count as relevant?
Relevance depends on the course applied for, which is why the counted set differs between a science track and an arts track. Confirm the specific requirement for the course your child is targeting.

Should my child drop a subject to protect the aggregate?
Rarely, and not without checking the course requirement first. A subject dropped is also a subject unavailable if a plan changes. The stronger play is usually to lift the weak subject.

Does this affect Polytechnic admission?
Polytechnic admission runs on its own aggregate and its own criteria. This change concerns the Junior College route.

If a single weak subject is the thing standing between your child and the course they want, that is exactly the problem one-to-one teaching solves. Tell us the subject and we will shortlist tutors who have taught it at that level.