An A-Level subject combination is the set of H1 and H2 subjects you study during your two years at a Singapore junior college (JC). Most students take three H2 subjects, one H1 content subject, H1 General Paper, and H1 Project Work. This guide covers how to choose the right combination based on your target university course, the 2026 UAS scoring changes, and your JC's available subject options.
Q: What does JC Subject Combination Guide (Singapore) cover? A: How JC subject combinations work (H1/H2/H3 + contrasting-subject rules), the impact of the 2026 scoring changes, common Science and Arts stream combinations, which JCs offer niche subjects, school-specific subject combination links for all 17 JCs and MI, and a checklist for mapping choices to university prerequisites.
TL;DR A common pattern is four content subjects (often 3 H2 + 1 H1, or 4 H2) plus General Paper and Project Work-but details vary by school and cohort. Many JCs apply a contrasting subject principle (e.g., Science students take a Humanities/Arts subject; Arts students take Mathematics). Verify the exact rule from your school's official subject combination list. Start from university prerequisites, then work backward to a combination you can sustain with your CCA and weekly revision time. Under the 2026 scoring system (70RP), only your best 3 H2 + 1 H1 count toward the University Admission Score-making the choice of your 3 core H2s more important than ever.
Deciding between pure science and combined science at O-Level? See our Combined Science vs Pure Science comparison - it covers how each path affects your H2 science options at JC.
The 2026 A-Level Scoring Changes (70RP) - Why Your 3 H2s Matter More
Starting from the 2026 university admissions cycle, the A-Level University Admission Score (UAS) shifts from the old 90-rank-point system to a maximum of 70 rank points.
Key changes that affect subject combination planning:
Only your best 3 H2 + 1 H1 content subjects count toward your base UAS. A 4th H2 does not directly count toward your base UAS, but may improve your final score via rebasing (see our 70RP vs 90RP guide).
Project Work (PW) becomes pass/fail. It no longer contributes rank points - removing the old "free A" safety net.
General Paper (GP) still counts as your H1. Some students' GP grade will be their H1 score if it is their best H1 result.
Mother Tongue Language (MTL) is excluded from UAS entirely (it was already a minor factor before).
What this means for subject combination choices:
Your 3 H2 subjects are now your entire H2 score. There is no 4th H2 to cushion a weak result. Choose H2s you can score well in, not just subjects that sound impressive.
4 H2 is still possible but the strategic calculus changes - the 4th H2 adds workload without directly boosting UAS. It may still be worth it for courses that require specific H2 prerequisites or for scholarship portfolios.
H1 subject choice matters more since GP or your H1 content subject will be the only H1 counting toward your score.
Many JCs apply a contrasting subject principle so students keep breadth.
In practice, this often looks like:
Science stream: at least one Humanities/Arts subject (commonly Economics/Geography/History/Literature).\
Arts stream: Mathematics at H1/H2 level (school rules vary).
Because details differ across JCs (especially for hybrid cases), treat "contrasting subject" as a rule to verify from your school's official booklet.
A contrasting subject is any subject from the "other" discipline group. For Science stream students, this means a Humanities or Arts subject. For Arts stream students, this is typically Mathematics or a Science. The exact classification of each subject into Science/Arts/Humanities groups is set by SEAB and your JC may have slightly different groupings - always check.
4 | Common Science Stream Combinations
The most popular Science stream combinations in Singapore JCs:
Combination
H2 subjects
H1 subject
Best suited for
PCME
Physics, Chemistry, Maths
Economics
Engineering, Computer Science, Physical Sciences
BCME
Biology, Chemistry, Maths
Economics
Medicine, Life Sciences, Pharmacy, Dentistry
PCMB (4 H2)
Physics, Chemistry, Maths, Biology
GP as H1
Students wanting max flexibility (Science + Medicine paths)
PCMe (H1 Maths)
Physics, Chemistry
Maths
Less common; only if JC allows H1 Maths for Science stream
Key points for Science stream students:
Chemistry is effectively mandatory for most Science combinations. Very few JCs offer Science combos without H2 Chemistry.
Physics vs Biology: Physics is more understanding-and-application-based (fewer topics, more problem-solving). Biology is content-heavy (large volume of facts and processes to memorise). Choose based on your learning style, not just your O-Level grade.
Economics as contrasting subject is the most common H1 choice for Science students, but Geography, History, and Literature are also available at most JCs.
4 H2 Science (e.g. PCMB): Under the 70RP system, the 4th H2 no longer directly boosts UAS. Consider 4 H2 only if you genuinely need all four for your target course or if you are confident in maintaining strong grades across all four subjects.
PCME vs BCME: Which Subject Combination for Medicine?
If you are deciding between PCME and BCME for medicine, here is how the two combinations compare.
Factor
PCME (Physics, Chem, Maths, Econs)
BCME (Bio, Chem, Maths, Econs)
Medicine eligibility
Eligible - NUS YLL and NTU LKC both accept H2 Physics as the second science
Eligible - the natural fit; H2 Biology aligns directly with pre-clinical content
Biology knowledge at university
No JC-level Biology foundation; students must self-bridge in Year 1
Strong foundation in cell biology, genetics, and physiology from JC
Fallback options if not medicine
Wide: engineering, computing, finance, data science all remain open
Narrower STEM fallback; life sciences, pharmacy, dentistry, food science
Maths intensity
Higher - H2 Physics is maths-heavy; suits students who think in equations
Lower - H2 Biology is content-heavy; suits students who prefer structured recall
Typical student profile
Strong O-Level Physics/Maths; prefers problem-solving over memorisation
Strong O-Level Biology; comfortable with high content volume
Risk factor
Lower overall risk for non-medicine fallback; slightly harder bridging if medicine is successful
Higher commitment to life-science track; limited pivots if medicine is not achieved
Verdict. Both combinations meet the minimum prerequisites for medicine at NUS and NTU. Choose BCME if medicine is your primary goal and you are confident in your Biology foundation - the subject alignment reduces bridging stress in the early clinical years. Choose PCME if you want a stronger safety net across engineering and computing tracks, or if your O-Level results show clearly stronger Physics than Biology performance.
NUS YLL and NTU LKC requirements. NUS Yong Loo Lin School of Medicine requires H2 Chemistry and either H2 Biology or H2 Physics. NTU Lee Kong Chian School of Medicine requires H2 Chemistry and at least one other H2 Science (Biology or Physics). Neither school mandates H2 Biology specifically, but check each university's admissions page for the latest requirements before finalising your combination: https://eclatinstitute.sg/blog/Singapore-University-Subject-Prerequisites-and-Subject-Planning-Guide-2026
5 | Common Arts Stream Combinations
Combination
H2 subjects
H1 subject
Best suited for
HELM
History, Economics, Literature
Maths
Law, Liberal Arts, Social Sciences
GELM
Geography, Economics, Literature
Maths
Social Sciences, Urban Studies, Environmental Studies
ELMh (H2 Maths)
Economics, Literature, Maths
History
Students wanting to keep quantitative courses open
GEHm
Geography, Economics, History
Maths
Public Policy, Social Sciences
Key points for Arts stream students:
H1 or H2 Mathematics: Most Arts stream students take Maths at H1 level. However, if you are considering Economics, Business, or any quantitative university course, H2 Maths keeps more doors open.
Economics is the most popular H2 for Arts students and is offered at every JC.
Hybrid combinations: Some JCs (notably EJC and NYJC) are known for being flexible with hybrid Science-Arts combinations - e.g., H2 Maths + H2 Economics + H2 Chemistry + H1 Literature. Check with your specific JC whether such non-standard combos are available.
6 | Which JCs Offer Niche Subjects?
One of the most important factors in choosing a JC is whether it offers the specific subjects you want. Below is a guide to niche subjects and where they are commonly available. This is not exhaustive - always verify with the JC's official subject combination booklet.
Niche subject
JCs known to offer it
Notes
H2 Computing
HCI, NJC, NYJC, VJC, ACJC, TJC, EJC, TMJC
High demand; some JCs have prerequisite O-Level grades or aptitude tests
H2 Further Mathematics
HCI, RI, NJC, NYJC, VJC, EJC, TJC, ACJC
Requires strong H2 Maths foundation; taken alongside H2 Maths
H2 Art
ACJC, NYJC, NJC, SAJC
Portfolio may be required; small cohort sizes
H2 Music
ACJC, NYJC, RI
Typically requires Grade 5+ ABRSM or equivalent; very small cohorts
H2 Theatre Studies and Drama
VJC
VJC is the main JC offering this as a full H2 subject
H2 Translation (Chinese)
HCI, NYJC
Niche subject for bilingual students; SEAB syllabus 9571
H2 Knowledge and Inquiry (KI)
RI, HCI, NJC, VJC, TJC
Replaces GP; from AY2026 admissions, KI is treated as a content subject rather than a GP substitute - verify current status with your JC
H2 China Studies in Chinese (CSC)
HCI, NYJC, RI
Taught and examined in Chinese
H2 Economics
All 17 JCs + MI
Included for completeness - this is universally available
Tip: If a niche subject is important to your university or career plans, shortlist JCs that offer it before looking at cut-off points. There is no point hitting the cut-off for a JC that does not offer the subject you need.
7 | Common combination patterns by university course
If you're aiming for...
Common patterns you'll see
What to verify
STEM-heavy courses
2 Sciences + Maths + contrasting Humanities
Which H2s are prerequisites for your course
Humanities / social sciences
2 Humanities + Econs + Maths (H1/H2)
Whether your JC requires H1 or H2 Maths for Arts
Medicine / Dentistry
H2 Chemistry + H2 Biology + Maths + contrasting
NUS/NTU medicine requires H2 Chemistry; check if H2 Biology is required or recommended
Law
No strict H2 prerequisites, but strong GP grades help
Some law schools value breadth; no single "correct" combo
Business / Accountancy
H2 Maths strongly recommended
NUS Business, SMU, NTU Business all value H2 Maths
Computer Science / Data Science
H2 Maths (some courses require it); H2 Computing helpful but often not required
NUS Computing requires H2 Maths; H2 Further Maths is a bonus
"Still deciding"
3 H2 + 1 H1 with one contrasting
Whether 4 H2 is worth the workload in your school
This table is intentionally generic - your school's subject availability and prerequisites will shape what is actually possible.
8 | How to choose (a checklist parents and students can use)
List target university courses first. Use official prerequisite pages for each course you might apply to.
Mark any "non-negotiable" H2s. If a course requires a specific H2, lock it in early.
Decide between 3H2 vs 4H2 realistically. Under the 70RP system, the 4th H2 does not directly improve UAS. Pick based on stamina, CCA time, and whether you can sustain weekly revision - not on prestige.
Use your JC's subject booklet to sanity-check feasibility. Confirm prerequisites, cut-offs, and whether your combination is timetabled/allowed.
Plan a 6-10 week bridging runway if you are switching into a subject with assumed background (common for some Maths/Science extensions).
Factor in the 70RP scoring system. Remember that only 3 H2 + 1 H1 count. A mediocre grade in a "harder" subject may cost you more than a strong grade in a subject you enjoy.
Common mistakes to avoid when choosing
Choosing based on friends' choices. Your friends will have different strengths, interests, and target courses. A combination that works for them may not suit you.
Ignoring timetabling constraints. Even if a JC "offers" a subject, not every combination of subjects is timetabled together. Check the official booklet to see which specific combinations are available, not just which individual subjects exist.
Assuming you can switch easily. While most JCs allow early changes, switching after the first month becomes very difficult. Treat your initial choice as a committed decision.
Picking 4 H2 for prestige. Under 70RP, the 4th H2 does not boost your UAS. Taking 4 H2 when you cannot maintain all four will dilute your study time and may drag down your overall grades.
Forgetting about H1 General Paper. GP counts as your H1 in the UAS calculation. Students who neglect GP preparation may find it costs them university placement. Budget revision time for GP throughout JC, not just before the A-Levels.
9 | Millennia Institute (MI) - a note
Millennia Institute follows a 3-year A-Level programme (not 2 years like JCs). MI offers a different range of subjects and combinations compared to JCs, and the pacing is different. If you are considering MI, check their official subject list carefully - some subjects available at JCs may not be offered at MI, and vice versa.
Note: Some JCs admit students through both JAE and IP tracks (e.g., EJC, VJC, NJC, TJC). The subject combinations available may differ slightly between JAE and IP cohorts - always check with the school directly.
How to use these links
Start with the official page for your target JC - download or bookmark the latest subject combination booklet/PDF.
Cross-reference with our guide for context on cut-off points, school culture, and practical tips.
Shortlist 2-3 combinations that meet your university prerequisites and are offered by your JC, then pick the one that best matches your strengths and stamina.
FAQ
What is the difference between H1 and H2 Maths?
H1 Maths (8865) is a single-paper subject covering basic calculus and statistics - roughly 60 % of the H2 content. H2 Maths (9758) is a two-paper subject that adds vectors in 3-D, complex numbers, differential equations, and formal hypothesis testing. The key practical difference: H1 Maths locks you out of most engineering, computing, data science, and quantitative finance courses at NUS, NTU, and SUTD. If there is any chance you will apply to a STEM or quantitative degree, keep H2 Maths. Switching from H1 back to H2 mid-JC is extremely difficult and rarely allowed.
Should I take 4H2 or 3H2+1H1?
Under the new 70-point UAS system, your university admission score is calculated from your 3 best H2 grades + H1 GP. If you take 4H2, your weakest H2 is converted to H1-equivalent points - so the 4th H2 acts as insurance rather than a bonus. Take 4H2 if you can comfortably maintain all four; drop to 3H2+1H1 if sustaining four H2s is dragging down your stronger subjects. Most students who start with 4H2 drop one by mid-JC2 - plan for this possibility rather than treating it as failure.
PCME or BCME - which subject combination is better?
Can I take H2 Maths without Additional Mathematics at O-Level?
Most JCs require at least a B3 in O-Level Additional Mathematics for H2 Maths. Some JCs accept students without A-Maths but place them on a bridging programme. The jump from E-Maths (or even A-Maths) to H2 Maths is steep - topics like complex numbers, vectors in 3-D, and integration techniques have no O-Level equivalent. If you did not take A-Maths, plan for significantly more self-study time in JC1 Term 1.
Is H2 Physics or H2 Biology easier to score?
Neither is inherently easier - they test different skill sets. H2 Physics rewards mathematical reasoning, unit analysis, and structured problem-solving; students who are strong in Maths tend to find it more manageable. H2 Biology rewards precise recall, essay-writing discipline, and the ability to apply concepts to novel scenarios; students who can handle large volumes of content tend to do better. The national distinction rate for both subjects is broadly similar. Choose based on your strengths and target university course, not perceived difficulty.
Q: How many subject combinations are there in JC? A: There is no single fixed number. Each JC publishes its own list of approved combinations, typically ranging from 15 to 40+ options depending on the school's size and subject offerings. Larger JCs like HCI, RI, and NYJC tend to offer more combinations, while smaller JCs may have fewer timetabled options. Always check your specific JC's official subject combination booklet.
Q: Can I change my subject combination after JC1 starts? A: Most JCs allow subject changes within the first few weeks of JC1 (commonly the first 2-4 weeks), subject to availability and timetabling. After this window closes, changes become much harder and may require special approval. Some schools allow a "trial period" where you attend both the old and new subject classes before committing. Dropping from 4 H2 to 3 H2 + 1 H1 is generally easier than switching a specific subject.
Q: Is 4 H2 worth it under the 2026 scoring system? A: Under the 70RP system, the 4th H2 no longer contributes directly to your University Admission Score. It is still worth considering if (a) you need specific H2 prerequisites for multiple university courses, (b) you are aiming for competitive scholarships that value breadth, or (c) you are genuinely strong in all four subjects. For most students, a strong 3 H2 + 1 H1 performance will be more effective than a mediocre 4 H2 performance.
Q: What subject combination do I need for medicine? A: NUS Yong Loo Lin School of Medicine requires H2 Chemistry and either H2 Biology or H2 Physics. NTU Lee Kong Chian School of Medicine requires H2 Chemistry and at least one other H2 Science (Biology or Physics). In practice, most medicine applicants take H2 Biology + H2 Chemistry + H2 Maths + H1 Economics (the "BCME" combination). Check the latest requirements at each university's admissions page.
Q: What subject combination do I need for engineering? A: Most engineering courses at NUS, NTU, and SUTD require H2 Mathematics and H2 Physics. H2 Chemistry is helpful but not always mandatory. The typical combination is PCME (H2 Physics + H2 Chemistry + H2 Maths + H1 Economics). For specific branches like Chemical Engineering, H2 Chemistry may be required. Computer Engineering and Computer Science typically require H2 Maths but not necessarily H2 Physics - check each programme.
Q: What is a "contrasting subject" in JC? A: A contrasting subject is a subject from the opposite discipline group. For Science stream students, the contrasting subject is a Humanities or Arts subject (e.g., Economics, Geography, History, Literature). For Arts stream students, the contrasting subject is typically Mathematics or a Science. This rule ensures breadth - most JCs require at least one contrasting subject in every combination. The exact classification follows the SEAB/MOE framework, but JCs may have minor variations.
Status: Updated 21 Mar 2026. Suggested refresh trigger: when MOE updates JC/MI subjects guidance, when your target universities update prerequisite lists, or when the 70RP scoring details are finalised by SEAB.
