A-Levels specialise. Three to four subjects, deeply taught across two years. The IB Diploma covers six subjects across six subject groups plus three core elements (Theory of Knowledge, Extended Essay, CAS). For a student certain about a STEM or single-discipline university route, A-Levels offer more depth. For a student keeping options open, the IB's breadth retains optionality.
Depth versus breadth
A-Levels specialise. Three to four subjects, deeply taught across two years. The IB Diploma covers six subjects across six subject groups plus three core elements (Theory of Knowledge, Extended Essay, CAS). For a student certain about a STEM or single-discipline university route, A-Levels offer more depth. For a student keeping options open, the IB's breadth retains optionality.
UK university entry
UK universities recognise both equally on the UCAS tariff. The IB Diploma at 38 points is broadly equivalent to A*AA in A-Levels for university entry purposes. Subject-specific requirements (Higher Level for the IB; specific A-Level subjects) matter at competitive programmes.
US university entry
US colleges find the IB Diploma more familiar than A-Levels. Both are recognised. Strong A-Level results typically convert to AP equivalents; some US colleges require additional AP exams alongside A-Levels.
University outcomes data
See our IB vs AP outcomes data for the comparative picture against the American curriculum.
How to choose
Choose A-Levels if your child has clarity on subject specialisation and is targeting UK or US universities with that specialisation. Choose IB if your child wants breadth, is targeting universities globally, or values the Theory of Knowledge and Extended Essay components.
Related
See IB Diploma Programme and A-Levels at international schools.