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Which IB HL Subjects Are Best for Top Universities?
Choose IB Higher Level subjects for top universities based on medicine, engineering, economics, law, business and country requirements.
By Oxbrivy Editorial Team. Reviewed by Oxbrivy curriculum tutoring desk.
Quick answer
Choose HL subjects from your intended course backwards. Medicine usually needs Chemistry HL plus Biology HL (or another science or maths). Engineering needs Mathematics: Analysis and Approaches (AA) HL and Physics HL. Economics, computer science and maths at top UK universities usually need Maths AA HL. Law has no fixed subjects but rewards essay-based HLs such as English, History or Economics. Oxford typically asks for 38–40 points with 6s and 7s at HL; Cambridge 40–42 with 776 at HL.
Key takeaways
- The "best" HL subjects are the ones your target course requires; everything else is secondary.
- Maths AA HL keeps the most doors open for economics, engineering, computer science, maths and physical sciences.
- Maths Applications and Interpretation (AI) HL is not accepted in place of AA HL for many competitive maths-heavy courses.
- Medicine: Chemistry HL is close to universal; Biology HL is usually the second choice.
- Oxford: typically 38–40 points including core, with 6s and 7s at HL. Cambridge: typically 40–42 points with 776 at HL.
- US universities do not set HL requirements, but they look at rigour, so HL choices should match your intended major.
Oxbrivy practical ranking
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Best for: Confirming required subjects, qualification level and grade conditions before choosing tutoring priorities.
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Admissions-critical grades
Best for: Improving the marks, predicted grades and exam technique that directly affect offers.
Watch out: Tutoring every subject equally can waste time when only a few subjects determine course eligibility.
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Best for: Matching IB, A-Level, AP, IGCSE or CBSE to the student's strengths, target country and course.
Watch out: Switching curriculum late can damage grades, confidence and application timelines.
IB HL subjects by course
This table shows what competitive UK universities commonly require. Requirements vary by university and course, so always confirm on the official course page before you finalise your choices.
| Course | Usually required at HL | Helpful third HL |
|---|---|---|
| Medicine | Chemistry, plus Biology (or Physics/Maths at some universities) | Biology or Maths |
| Engineering | Maths AA and Physics | Chemistry or Computer Science |
| Economics | Maths AA at the most selective universities | Economics or a humanities subject |
| Computer Science | Maths AA | Physics or Computer Science |
| Mathematics | Maths AA (often a 7) | Physics |
| Natural sciences / physics | Maths AA plus one or two sciences | A second science |
| Law | None fixed | English, History or Economics |
| Business / management | Often none; maths may be preferred | Economics or Maths |
Maths AA vs Maths AI: which one?
Mathematics: Analysis and Approaches (AA) is the more algebraic, proof-oriented course. Applications and Interpretation (AI) focuses on modelling and statistics.
For economics, engineering, computer science, mathematics and physics at the most selective UK universities, AA HL is usually required, and AI HL is often not accepted instead. For psychology, biology, business and many social sciences, AI can be fine.
If you are unsure between a maths-heavy course and something else, AA HL keeps more options open. Choosing AI and changing your mind in Year 12 can close off courses you later want.
IB scores top universities ask for
Total points matter, but the HL profile (which subjects, and at what grade) often matters more for shortlisting.
| University | Typical offer | Notes |
|---|---|---|
| University of Oxford | 38–40 points incl. core, with 6s and 7s at HL | Higher HL grades in course-relevant subjects for sciences |
| University of Cambridge | 40–42 points, with 776 at HL | Some courses specify a 7 in a named HL subject |
| LSE, Imperial, UCL | High 30s to low 40s depending on course | Maths-heavy courses often name Maths AA HL grades |
| US universities | No fixed IB offer | Admission is holistic; strong HL scores may earn credit |
How to choose if you are undecided
Pick one HL that you are strongest in, one that your most likely course requires, and one that keeps a second pathway open. A student deciding between economics and engineering, for example, might take Maths AA, Physics and Economics at HL.
Do not take a hard HL only because it looks impressive. A 5 in a prestigious HL can hurt more than a 7 in a subject that suits you, because predicted grades drive UK offers.
Indian students moving from ICSE or CBSE into the IB should check how their school timetables HL combinations, since not every combination is available at every school.
What about US universities?
US colleges do not set HL requirements. They look at whether you took a demanding programme and whether it fits your intended major. An engineering applicant without Maths AA HL and Physics HL will look less prepared than one with them.
Some US colleges grant credit or advanced standing for HL scores of 5, 6 or 7, but policies vary widely.
The Oxbrivy Admit Probability Engine can show how your predicted IB points and subjects compare with the courses on your list.
Frequently asked questions
Which IB HL subjects are best for medicine?
Chemistry HL is required almost everywhere, and Biology HL is usually the second. Some universities accept Physics or Maths as the second science.
Is Maths AI HL accepted for economics?
At the most selective UK universities, Maths AA HL is usually expected for economics. AI HL is often not accepted in its place, so check each course page.
How many IB points do I need for Oxford?
Typically 38–40 points including core, with 6s and 7s at HL depending on the course.
How many IB points do I need for Cambridge?
Typically 40–42 points with 776 at HL, and some courses name a 7 in a specific HL subject.
Do US universities care about IB HL subjects?
They do not set requirements, but they assess rigour and fit with your intended major, and some award credit for strong HL scores.
Sources and review note
This public guide is intended for student education. Visa, fee, scholarship, and work-rights rules can change quickly, so Oxbrivy verifies current official sources before giving personalised advice.
- UCAS entry requirements
- UCAS qualifications advice for international advisers
- UCAS entry requirements filter guidance
- UCAS predicted grades guidance
- International Baccalaureate course selection guidance
- International Baccalaureate university admission guidance
- International Baccalaureate recognition database guidance
- Cambridge International recognition in the USA
- Cambridge International recognition search
- Cambridge International worldwide recognition
- College Board AP at a Glance
- College Board international AP and SAT recognition search
- College Board AP international recognition FAQ
- College Board high school classes colleges look for
- University of Oxford international qualifications
- University of Oxford admissions requirements summary
- University of Cambridge international entry requirements
- University of Cambridge choosing high school subjects
- LSE BSc Economics
- LSE undergraduate entry requirements
- MIT international secondary school report FAQ
- Stanford international applicants
- Harvard first-year applicants
- Google Search Central helpful content guidance
Student visa guides
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