IB Diploma vs A-Level
The IB Diploma (6 subjects + TOK + EE + CAS, max 45 points) and A-Level (usually 3-4 subjects, A*-E grading) are two popular international high school programs. The IB is broad and interdisciplinary — you take required subjects across science, language and the arts. A-Level is focused — you study just 3-4 subjects in depth. US universities lean slightly toward the IB, while UK universities (especially the Russell Group) lean toward A-Level, but both are accepted worldwide.
Option 1
Broad and interdisciplinary
International Baccalaureate Org.
Option 2
In-depth 3-4 subjects
Cambridge, Edexcel, AQA, OCR
| Criterion | IB Diploma | A-Level |
|---|---|---|
| Duration | 2 years (ages 16-19) | 2 years (AS Level + A2) |
| Number of Subjects | 6 subjects (3 HL + 3 SL) + 3 required core | Usually 3-4 A-Level subjects |
| Grading | 1-7 per subject, max 42 + 3 bonus = 45 | A* → E per subject |
| Passing Grade | Min 24, max 45 (most universities want 30+) | Min E, most universities want A-A* |
| Breadth | Broad — 6 different areas required | Focused — only the 3-4 chosen subjects |
| Core Requirements | TOK (Theory of Knowledge), EE (Extended Essay), CAS | None |
| Writing Intensity | Very high — 4000-word EE + an essay in every subject | Exam-focused, less coursework |
| Activity Requirement | 150+ hours CAS (Creativity, Activity, Service) | None |
| University Acceptance (General) | Accepted worldwide, advantageous in the US | Accepted worldwide, advantageous in the UK |
| University Credit (US) | A 5+ score usually earns first-year exemptions | Usually no direct entry into the second year |
| Annual Cost | More expensive (private school + IB license) | Cheaper (parallel study, self-study) |
IB Diploma is right for you if
A-Level is right for you if
The IB and A-Level can't be compared on difficulty — they are hard in different ways. An IB student learns time management by juggling 6 subjects + a 4000-word essay + extra coursework. An A-Level student covers 3-4 subjects in depth, through full understanding rather than memorization. Students often score lower on the IB because it is far broader than a standard national curriculum.
IB: offered by selective private schools and international schools worldwide. A-Level: offered by institutions registered with Cambridge International, as well as dedicated preparation centers.
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