IBDP · Subject & Pathway Consultation

How to choose your IB subjects — without closing doors you can't reopen

Work backwards from the degree, not forwards from the subject. Subject choice is made once, usually in Year 10, and it is very hard to undo. A focused consultation with an experienced IB educator turns a guess into a plan — matched to your child's strengths and the universities they're aiming for.

Held in English · 简体中文 · 한국어 — so parents and student both take part

Why the choice matters

Choosing IB subjects: a one-time decision with a long shadow

Three things make this different from any other choice your child makes at school. Understanding them is the difference between planning and guessing.

The KSA Pathway Map

How do you actually choose IB subjects?

Identify the courses your child might apply to, read the published subject prerequisites for those courses, and choose Higher Level subjects that satisfy them. Only then filter by interest, strength and workload — because a subject your child loves is worthless if it locks the degree they want. This is the order we work in, and the order matters more than the steps.

STEP 01

Start from the degree, not the subject

You don't need a career plan — you need two or three plausible directions, because each implies a different Higher Level spine. A student keeping both medicine and engineering open needs HL Chemistry, HL Physics and HL Maths, which is already three HLs and leaves nothing to negotiate.

If no direction is clear, choose the combination that closes the fewest doors: HL Maths Analysis and Approaches plus one HL science keeps most STEM and most non-STEM routes reachable.

STEP 02

Read the published prerequisites

Universities publish exactly which subjects they require, at which level — this is not guesswork. Below are NUS's stated IB prerequisites for programmes Singapore families ask about most.

Selected NUS undergraduate subject prerequisites for IB Diploma applicants
NUS programmeStated IB prerequisite
MedicinePass in HL Chemistry, and either HL Biology or HL Physics. A portfolio is submitted separately; UCAT is required when applying on predicted results.
LawAt least a 5 in SL or HL English (Language and Literature, Literature, or English B); or SL Literature and Performance.
Business Administration & Business AnalyticsPass in HL Maths Analysis and Approaches.
Business Administration & Business AI SystemsPass in HL Computer Science; or a good pass in SL Maths AA or HL Maths AI.
Landscape ArchitecturePass in SL Chemistry, SL Maths AA or SL Physics; or HL Maths AI.

MAA = Maths: Analysis and Approaches, MAI = Maths: Applications and Interpretation. NUS states prerequisites are revised annually — confirm against the current NUS programme prerequisites before finalising. NTU and SMU publish their own, and they do not match — check a combination here.

STEP 03

Settle Maths before anything else

Maths constrains the most degrees, so decide it first. Analysis and Approaches is the theoretical route — algebra, calculus, proof. Applications and Interpretation is the applied route — statistics, modelling, data, with technology built into the assessment.

Comparison of IB Mathematics Analysis and Approaches with Applications and Interpretation
Analysis & ApproachesApplications & Interpretation
EmphasisAlgebra, calculus, formal proofStatistics, modelling, interpreting data
TechnologyCalculator and non-calculator papersCalculator central throughout
Typically suitsEngineering, physics, computer science, mathematics, economicsBusiness, social sciences, design, psychology
The trapHL AA is the heaviest maths in the Diploma. Taking it to look strong is a common source of grade slippage.AI is not the easy option — it's a different one. Choosing it can quietly close STEM routes.
Rule of thumbWhen a university lists "IB Mathematics HL" without qualification, it almost always means HL AA. Never assume HL AI is accepted in its place — check.

The three local universities disagree about this, which almost nobody writes about. NTU states that where Mathematics is a prerequisite, both Analysis and Approaches and Applications and Interpretation are acceptable, with no preference. NUS names the course explicitly, and several programmes require HL MAA specifically. SMU requires Mathematics only for Economics and Computer Science, at either level. So HL Maths AI keeps NTU Engineering open while closing several NUS business degrees.

STEP 04

Check what your school actually offers

A subject your school doesn't teach is not a choice, and neither is one that clashes on the timetable. Schools also set rules on top of the IB's: some Singapore international schools do not permit four Higher Levels at all, except for a small number of language students. If a required Higher Level isn't available, that's a conversation about changing schools — and it has to happen in Grade 10.

Singapore Citizens and Permanent Residents carry an additional constraint. MOE's bilingual policy places Mother Tongue Language alongside the Diploma rather than inside it. NUS allows applicants who meet everything except the Mother Tongue requirement to apply without prejudice, admitting them provisionally on condition they satisfy it before graduating. NTU accepts a pass in Mother Tongue Language A or B at Standard or Higher Level within the Diploma itself. Confirm the specifics with your school's IB coordinator.

STEP 05

Stress-test the workload — last, not first

Only now bring in interest and strength. A Higher Level subject runs 240 teaching hours against 150 at Standard Level, and the Diploma stacks three core components on top of six subjects. The failure mode is not choosing a hard subject; it's choosing four of them.

The IB Diploma Programme structure and passing requirements
ElementWhat the IB requires
SubjectsSix, one from each group. The arts group may be swapped for a second science, humanities or language.
Higher LevelMinimum three, maximum four. 240 teaching hours each.
Standard LevelThe remainder. 150 teaching hours each.
Extended EssayA 4,000-word independent research essay, within one of the six subjects.
Theory of KnowledgeA 1,600-word essay on a prescribed title, plus the TOK exhibition.
CASMust be completed. No CAS, no diploma — regardless of grades.
Total points45. Six subjects at up to 7 each, plus up to 3 from TOK and the Extended Essay together.
To be awarded the diplomaAt least 24 points, at least 12 from HL and at least 9 from SL. No grade below 2, no more than two grade 2s, and no more than three grades of 3 or below.
TOK and the Extended EssayGraded A–E. A grade E in either is a failing condition — the diploma is not awarded, whatever the subject grades.

Structure and passing criteria as published by the International Baccalaureate. Three Higher Levels at grade 6 beats four at grade 4 — for the diploma, and for admissions.

Starting points

Which HL combination fits which degree?

A conversation starter, not a prescription. Every university publishes its own requirements — these are the shapes we most often build from.

Typical Higher Level subject combinations by intended degree
Intended degreeTypical HL spineWhat to watch
MedicineChemistry, Biology, and one of Maths AA / Physics / EnglishChemistry HL is near-universal. A few countries require three sciences, forcing a non-regular diploma.
EngineeringMaths AA, Physics, and one of Chemistry / Economics / a languageNTU accepts either Maths course. Most universities outside Singapore expect AA.
Computer scienceMaths AA, Computer Science or Physics, plus one open HLCompetitive programmes assume HL AA. Some accept HL Computer Science in place of a science.
Economics or businessEconomics, Maths (AA or AI), and one essay-based HLTop programmes increasingly expect HL Maths. NUS lists HL AA for several business degrees.
LawEnglish, History, and one of Economics / a language / PhilosophyNUS asks for at least a 5 in SL or HL English. Single-honours History often wants History HL.
UndecidedMaths AA, one science, one humanityThe maximum-optionality combination. Costs workload, buys time.

Already studying Economics? Our IB Economics programme covers HL and SL alongside the Internal Assessment.

Timing

When does each decision get made?

Subject choice closes before the Diploma begins. Everything after it — coursework, then applications — inherits that decision.

  • Subject & HL/SL selection Grade 10 → early Grade 11
  • IA, EE & TOK Grade 11 → mid Grade 12
  • University applications Late Grade 11 → offers

Most schools allow subject changes only in the opening weeks of Grade 11, and every week of delay costs teaching hours. Treat the Grade 10 decision as close to final — the useful research is worth doing a full term early.

For Korean & Chinese-speaking families

The language groups are where bilingual families gain or lose the most

Almost no subject-choice guide written for a global audience covers this. Group 1 is studies in language and literature; Group 2 is language acquisition. Taking a home language as a Group 1 Language A rather than a Group 2 Language B changes what the Diploma is worth.

The bilingual diploma. The IB awards a bilingual diploma to a student who completes two Group 1 languages with a grade of 3 or higher in both — or who completes a Group 3 or Group 4 subject in a language different from their Group 1 language, again with a 3 or higher. For a fluent Korean or Mandarin speaker in an English-medium school, this is often achievable within the six subjects they were going to take anyway. Most families never learn it exists until it is too late to arrange.

School-supported self-taught Language A. Where a school doesn't teach a student's home language, it can often be studied as a self-taught Language A at Standard Level — how students keep Korean, Japanese or Dutch inside the Diploma. It requires planning in Grade 10 and a school willing to register it.

English is not optional for NUS. NUS requires English to be one of the subjects taken at the IB examination, and asks for English test scores where at least three IB subjects are taught in a language other than English. SMU, by contrast, states it has no language requirement.

Our consultations can be held in English, Mandarin or Korean, so the parent making the decision understands every trade-off — not only the student.

Why us

Guidance from the founder — two decades of watching subject choices play out

Meet Li, founder of KS Academia Prep

Your child's school counsellor may be advising two hundred students at once. Here, the consultation is led by Li — founder of KS Academia Prep, a National University of Singapore Life Sciences graduate, and an IB educator with more than 22 years teaching Biology and Chemistry in Singapore, now leading the centre's academic advisory work.

Li's former students span generations of doctors, dentists, pharmacists and researchers, alongside entrants to Law, Economics and the sciences — at universities including Cambridge and Oxford, across the UK, US, Canada, Hong Kong, Korea and Singapore. The starting point is always the same: your child's genuine interests, weighed honestly against the pathways each combination opens or closes, with parents in the room as part of the team.

22+ yrs
Teaching the IB in Singapore
6
Regions where alumni now study
1-to-1
Planned around your child

The boundary we keep

This is academic planning: which subjects, at which level, and how they map to course requirements. We do not run admissions, personal statements or placements — just a sound subject foundation your child builds two years of work on.

A signature service at KS Academia Prep

What you get

What the consultation covers

Not a generic template and not a sales call — a focused working session that ends with a plan you can act on, and keep.

Who it's for

Three families, three different problems

Find the one that sounds like yours.

Grade 10

Choosing subjects

"The subject form is due next month and nobody has explained what each combination closes off."

  • Torn between three HL combinations
  • Unsure whether Maths AA or AI is the right call
  • A degree in mind, no idea what it requires
Start with subject selection

Grade 10 – 11

A degree in mind

"She's set on medicine — or engineering — and we can't tell which HL subjects actually keep it open."

  • A target course, unclear prerequisites
  • Weighing NUS against overseas requirements
  • One wrong HL could close the door
Start with pathway planning

Grade 10 – 11

Keeping options open

"There's no fixed plan yet, and we don't want to shut doors by accident before he's decided."

  • No settled direction — and that's fine
  • Wants the maximum-optionality combination
  • Planning two years ahead, not one
Start with long-term planning

Not a fit: we don't write essays, coursework or applications on a student's behalf, and we're not a university-placement or study-abroad agency. This is academic planning — which subjects, at which level, and how they map to course requirements. Everything a student submits stays their own work.

Test a combination before you commit to it

Our free checker takes six subjects with their levels and grades, works out the total from the IB's official core points matrix, runs it against every diploma award criterion, then tests the combination against the published prerequisites at NUS, NTU and SMU.

  • Diploma award criteria
  • TOK & EE core points
  • NUS, NTU, SMU prerequisites
  • No invented cut-off scores
Common questions

What parents ask before booking

When are IB subjects chosen, and when is it too late to change?
Most schools finalise IB subject choices towards the end of Grade 10, before the Diploma Programme begins. Once teaching starts, switching becomes difficult — the student must make up content already covered, and the timetable may not allow every combination. In practice, most students are locked in within the first few weeks of Grade 11, which is why the decision is best made deliberately, before it is made for you.
Can my child change IB subjects after starting the Diploma?
Usually only in the opening weeks of Grade 11, and it is the school's decision rather than the IB's. Every week of delay costs teaching hours against a fixed 240-hour Higher Level course. Speak to the IB coordinator the moment a subject feels wrong; do not wait for the first report.
How many subjects are taken at Higher Level?
Three at minimum and four at maximum, alongside three or two at Standard Level, for six in total. If a student registers for four Higher Levels, only the three highest HL grades count toward the twelve-point HL minimum needed for the diploma — so the fourth adds workload and admissions signal, but no safety margin. Some schools do not permit four HLs at all.
Do universities care about Standard Level grades?
Yes, but they read Higher Level grades far more closely, and many degree courses specify required HL subjects. SL grades contribute to the overall diploma score and are considered, but the HL choices carry the most weight in whether a course is open to your child.
Is Maths AI easier than Maths AA?
No — it's different, not easier. Analysis and Approaches demands algebraic fluency and includes a non-calculator paper. Applications and Interpretation demands the interpretation of unfamiliar real-world problems and heavy use of a calculator. Students strong at one are frequently weak at the other. The real risk in choosing AI is not difficulty — it's that some quantitative degrees will not accept it.
Do I need HL Maths for NUS, NTU or SMU?
It depends on the university, and they differ. NUS names Mathematics as a required prerequisite for selected programmes and lists HL Maths Analysis and Approaches specifically for several, including Business Analytics. NTU states that where Mathematics is a prerequisite, both AA and AI are acceptable with no preference. SMU requires Mathematics only for Economics and Computer Science, at either level. Prerequisites are revised annually.
Is there a cut-off score for IB applicants to NUS or NTU?
No. NUS states that the sample of IB applicants is too small to produce a grade profile that accurately reflects a programme's requirements, so IB is excluded from the published Indicative Grade Profile. NTU says the same on its IB admissions page. IB applicants are assessed on the score obtained and the subjects taken, with non-academic achievements and any required interview. Any site quoting a specific IB cut-off is reporting anecdote, not published data.
What if my school doesn't offer the Higher Level I need?
Then it's not a subject choice, it's a school choice — and it has to be made in Grade 10. Not every IB World School offers every subject, and timetable clashes can rule out combinations that look fine on paper. If a required HL is unavailable, the options are changing schools, finding an approved online provider, or changing the degree target. All three are easier before the Diploma begins.
What is a bilingual diploma, and can my child get one?
The IB awards a bilingual diploma to a student who completes two Group 1 languages with a grade of 3 or higher in both, or who completes a Group 3 or Group 4 subject in a language other than their Group 1 language, again with a 3 or higher. For a fluent Korean or Mandarin speaker in an English-medium school, it is often reachable within the six subjects already planned — but it must be arranged during subject selection, not afterwards.
Does the Mother Tongue requirement apply to IB students?
Yes, for Singapore Citizens and Permanent Residents. NTU accepts a pass in Mother Tongue Language A or B at Standard or Higher Level within the IB Diploma as satisfying the requirement. NUS allows applicants who meet every requirement except Mother Tongue to apply without prejudice; successful applicants are admitted provisionally and must satisfy it before they can graduate. Private candidates can sit the A-Level Mother Tongue or O-Level Higher Mother Tongue paper through SEAB.
Is this a university admissions or study-abroad service?
No. This is academic planning only: which subjects, at which level, and how that combination maps to the entry requirements of the courses and regions your child is considering. We do not handle applications, personal statements or admissions. Our aim is a sound subject foundation, not a placement.
Which languages is the consultation available in?
English, Simplified Chinese and Korean — so that both the student and the parents can take part fully, including parents who prefer to discuss the plan in Mandarin or Korean.
Talk it through with us

Turn the guess into a plan

A framework narrows the options. It can't weigh your child's strengths against their school's timetable, or against a degree they haven't settled on. KS Academia Prep runs IBDP seminars and one-to-one consultation sessions — for parents and students alike.

For groups

IBDP seminars

Sessions for parents and students together — how the Diploma is scored, where points are lost, and what each subject combination opens and closes.

One to one

IBDP consultation sessions

Your child's actual grades, actual school, actual shortlist. Subject selection, Maths AA vs AI, prerequisites and long-term pathway planning. Parents welcome to sit in.

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