IB Diploma or A Levels: Which Route Suits You?
The IB Diploma and A Levels both lead to university, in the UK and well beyond, but they ask for very different things over the same two years. One is a single diploma built on six subjects and a compulsory core; the other is a set of separate qualifications, usually three, each studied in depth. This page sets out the official facts side by side, so that the decision rests on them.
- Facts from the IB and the A Level boards
- Structure, grading and exam timing compared
- How universities read each route
- No route declared “better”
The IB Diploma and A Levels side by side
A Level arrangements differ by awarding body; where they do, the board is named.
| Criterion | IB Diploma | A Level |
|---|---|---|
| Awarded by | International Baccalaureate (IB) | Cambridge International, Pearson Edexcel, AQA or OCR, each with its own specifications |
| Length | Two years, for students aged 16 to 19 | Usually two years; Cambridge also allows AS Level in the first year and the rest of the A Level in the second |
| Subjects | Six, one from each subject group; the arts can be replaced by a second subject from another group | Chosen by the student and school; most students take three, some take four |
| Levels | Normally three subjects at Higher Level (no more than four) and the rest at Standard Level | AS Level and the full A Level |
| Recommended teaching time | 240 hours per Higher Level subject; 150 per Standard Level subject | About 360 guided learning hours per Cambridge International A Level; about 180 per AS Level |
| Compulsory core | Theory of Knowledge (an exhibition and a 1,600-word essay), the 4,000-word Extended Essay, and Creativity, Activity, Service | None |
| Grading | Each subject 1–7; Theory of Knowledge and the Extended Essay together can add up to 3 points; maximum 45 | Each A Level graded A* to E; AS Level graded separately |
| What is awarded | One Diploma, from 24 points, subject to further conditions that include completing the core | Each A Level is a qualification in its own right |
| Assessment | Final exams in most subjects, plus internal assessment marked by teachers and moderated by the IB | Mainly written exams; some subjects add practical or non-exam assessment, depending on the board |
| Exam timing | The May or November session, normally at the end of the two years | Cambridge: June and November series; Pearson International A Level: units in January, June and October; AQA: all papers in May–June of one year |
| Example offer: University of Cambridge | Minimum 41–42 points, with 7, 7, 6 in the Higher Level subjects | Minimum A*AA or A*A*A, depending on the course, usually on three A Levels |
Sources: International Baccalaureate, understanding DP assessment, examination sessions, Extended Essay and TOK pages and a DP subject brief; Cambridge International AS & A Level Biology 9700 syllabus; Pearson Edexcel International A Level Biology specification; AQA A-level Biology 7402 specification; University of Cambridge, accepted qualifications; all checked 8 October 2026. Individual subjects vary by board and by subject.
Who each route tends to suit
The IB Diploma often suits
Students who want to keep languages, a science, mathematics and the humanities going to the end of school, and who can manage steady coursework deadlines alongside exam preparation. The core rewards students who enjoy writing and independent research.
A Levels often suit
Students who already know which subjects they want to take further and would rather go deep in three or four than broad across six. Students aiming for a particular degree can concentrate on the subjects it requires.
Either may suit
Students whose strengths and plans are not yet fixed. Then the subjects each school actually offers, the board it uses and how the student works across the year usually decide it.
How universities treat the two routes
UK universities publish entry requirements for both. The University of Cambridge, for example, accepts A Levels and international A Levels from Cambridge International, Oxford AQA and Pearson Edexcel, usually bases its offers on three A Levels, and sets IB offers in total points with specific Higher Level grades. It treats Higher Level subjects as meeting its A Level subject requirements and Standard Level subjects as meeting AS requirements.
Outside the UK, the IB says Diploma students are free to apply to any university, and keeps a database of the recognition policies universities have shared with it. A university without a published policy may still accept IB students, and a policy is never a promise of admission. For A Levels, Cambridge International publishes recognition guidance for popular study destinations and a search of organisations that accept its qualifications. In every case, the rule to rely on is the one the university publishes for the year you apply.
How to decide
List the degree courses you are considering
Note the subjects each one requires. If a course asks for two specific sciences, or for mathematics at a high level, check that the route you choose lets you take them at Higher Level or as full A Levels.
Check what your school offers
Schools rarely offer every IB subject or every A Level, and an A Level school uses particular boards. The real choice is between the combinations available to you.
Be honest about how you work
The IB spreads assessment across two years with internal deadlines and the core. A Levels concentrate most marks in exams. Think about which pattern has suited you so far.
Read the offers side by side
For each university on your list, compare the IB points and Higher Level grades it asks for with its A Level grades. That shows what each route would demand of you in practice.
Practical points for students in Africa
The IB Diploma is taught only in schools the IB has authorised, and students sit the exams through their own school. A Levels are taught in international and British-curriculum schools, and Cambridge International syllabuses such as Biology can also be entered by private candidates. Which board a school uses matters: Pearson’s International A Level is sat unit by unit in January, June or October; AQA’s A-levels are linear, with every paper in one May–June series; Cambridge papers come at the end of the course, or in two stages through AS Level.
UK universities make offers before final results, on the grades a student’s school predicts, so on either route the first year counts. Lessons with us are live online and taught in English, and they follow the student’s own IB subject guides or A Level specification, board by board.
Related pages
IB Diploma Tutoring
Online IB Diploma tutoring: HL and SL subjects in all six groups, IA and EE supervision within IB rules, TOK and revision courses.
IB prices
IB tutoring from USD 95 per 90-minute lesson. Compare lesson packages and included materials.
A Level Tutoring
Board-aware A Level tutoring online: AQA, OCR, Pearson Edexcel (UK and International A Level) and Cambridge International, subject by subject.
A Level prices
A Level tutoring from USD 95 per 90-minute lesson. Compare lesson packages and included materials.
AP vs IB
AP and the IB side by side: single exams scored 1 to 5 each May against a two-year diploma out of 45, how universities use each, and how to combine them.
Exam comparisons
Side-by-side comparisons of the exam choices students in Africa most often face: SAT or ACT, IB or A Level, AP or IB, IELTS, TOEFL or PTE, GMAT or GRE.
Frequently asked questions
Short, direct answers. If yours is not here, ask us.
Weighing the IB against A Levels?
Book a free intro call. We will talk through your subjects, your school’s options and your target universities, and help you see what each route would ask of you. Lessons are live online and taught in English.