A-Level vs IB vs AP: Which Is Right for You?
By the Bright Sprouts Academy teaching team · Updated October 2026
Quick answer
A-Levels go deep in usually three subjects, graded A* to E. The IB Diploma covers six subjects plus a compulsory Core (Theory of Knowledge, Extended Essay, CAS) and is scored out of 45. AP is a set of individual College Board exams scored 1 to 5, normally taken as part of an American high school curriculum. UK and US universities accept all three. A-Levels suit students who know which area they want to specialise in, the IB suits students who prefer breadth, and APs suit students on an American curriculum or applying mainly to US universities.
At a glance
| A-Level | IB Diploma | AP | |
|---|---|---|---|
| Awarding body | AQA, Edexcel, OCR, WJEC, Cambridge | International Baccalaureate | College Board (USA) |
| Number of subjects | Usually 3 (sometimes 4) | 6 + the Core | Flexible, exam by exam |
| Grading | A* to E | 1–7 per subject; max 45 points | 1 to 5 per exam |
| Assessment | Mainly final exams; coursework in some subjects | Final exams + Internal Assessments | One exam per subject, in May |
| Duration | 2 years (Years 12–13) | 2 years | Usually a 1-year course per exam |
| Best for | Depth and specialisation | Breadth and all-round study | US curriculum and US applications |
Depth vs breadth
The biggest difference is structure. A-Level students drop most subjects after GCSE and study three in depth, which suits students who already know which area they want to pursue at university, such as sciences for medicine or maths for engineering.
IB students must continue a language, a humanities subject, a science and maths, as well as completing the Extended Essay and Theory of Knowledge. That suits students who want to keep options open, or who do well with a varied workload.
How universities compare them
UK universities publish both A-Level and IB offers for most courses. For example, an A*AA A-Level offer is often matched by an IB offer of around 38–40 points with specific Higher Level scores. US universities value all three, particularly when the student has taken the most demanding options their school offers.
AP scores are accepted by many UK universities, usually as several grade-5 exams alongside a high school diploma. Requirements vary by course, so always check each university's international entry requirements.
Which is harder?
None of them is simply harder than the others. The IB is broader and requires steady effort across six subjects and the Core. A-Levels go deeper and put more weight on the final exams. AP courses vary a lot in difficulty, from Calculus BC and Physics C at the top to more introductory courses.
FAQ
Frequently asked questions
Do UK universities prefer A-Levels or the IB?
Neither is officially preferred. Both are fully accepted, and most courses publish separate entry requirements for each.
Can I switch from IB to A-Levels?
It is possible, ideally early in Year 12. Content overlaps with the matching HL subjects, but the exam style is different, so focused tuition helps with the change.
Are APs enough to get into a UK university?
Often, yes, as part of a US-curriculum application. Competitive courses usually ask for three or more APs at grade 5, sometimes along with SAT or ACT scores.
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Last reviewed by the Bright Sprouts Academy teaching team. Exam board and university requirements change, so always check the official specification and admissions pages.