Same Ambition, Two Very Different Timetables
Picture two students applying to the same universities in London and Boston. One has spent two years on three A-levels. The other has spent those same two years juggling six IB subjects, an extended essay and a theory of knowledge course. Neither starts with an automatic advantage. What differs is the shape of the application each one can build, and which doors are easier to open.
How the Two Are Built
A-levels are usually three subjects, occasionally four, each studied in depth and examined at the end of two years. Grades run from A* to E.
The IB Diploma asks for six subjects spread across languages, humanities, sciences and maths, plus an arts or elective subject. Three are taken at Higher Level and three at Standard Level, each scored from 1 to 7. On top of that come the Extended Essay, Theory of Knowledge and the CAS activity requirement. The total is out of 45: up to 42 from the subjects and up to 3 from the core.
How UK Universities Read Them
UK offers are written in each qualification's own language. You might see A*AA for an A-level applicant and 38 points with 6-6-6 at Higher Level for an IB applicant. For the most selective courses, IB offers commonly sit in the high 30s to low 40s, usually with specific Higher Level grades attached.
Subject requirements matter in both routes. An A-level student already holds named subjects. An IB student needs the right Higher Level choices, and maths-heavy degrees often prefer Analysis and Approaches at Higher Level.
The UCAS Tariff gives points to the individual IB subjects, but the diploma as a whole does not carry points. Many selective universities ignore the Tariff and publish their own grade or points requirements, so read each course page, not a generic conversion chart.
How US Universities Read Them
US admissions officers do not convert your grades. They read your transcript in the context of what your school offers, using the school profile your counsellor sends. Neither qualification is considered better, and both are respected as rigorous.
Two practical points deserve attention:
- Breadth. American applicants typically carry more courses, so three A-levels can look narrow on paper. This is expected and not penalised, but show breadth through activities, independent study and your essays.
- Credit. Many US colleges grant credit or advanced standing for strong Higher Level IB scores and good A-level grades. Policies vary widely, and the most selective schools may give little or none, so check each college's international credit page.
Standardized testing requirements apply the same way whichever qualification you take.
Flexibility: Where Each One Wins
The IB keeps options open. If you are undecided about a degree, or you are applying to US liberal arts colleges, or to universities in Canada, Europe or Asia, the broad subject mix is a real asset. The cost is workload. Six subjects plus the core is demanding, and missing the core requirements can put the diploma itself at risk.
A-levels reward early commitment. If you know you want engineering, history or medicine, spending two years in depth on the right three subjects is efficient, and with fewer subjects it can be easier to reach top grades in each. The trade-off is that it is harder to pivot to a different field later.
If Your School Offers Both
Work through five questions before you choose:
- How sure are you about your degree subject?
- Are your strengths spread across many subjects or concentrated in a few?
- Which countries are on your list, and do their universities publish clear requirements for each route?
- How do you handle sustained workload alongside activities?
- What has your school achieved in each programme, and who teaches it?
Then speak to your university counsellor and compare actual offers from two or three universities you like. Those pages will tell you more than any general advice about which route is better.