What is the International Baccalaureate, and how does it compare to A-levels?
A two-year pre-university programme taken in schools worldwide, structured around breadth where A-levels are structured around depth — which is the essential difference and determines who each suits.
How the IB Diploma is structured. Six subjects, one from each of six groups — language and literature, language acquisition, individuals and societies, sciences, mathematics, and the arts or an additional subject — studied as three at higher level and three at standard level.
Plus the core, which is the distinctive part:
Theory of Knowledge, examining how we know what we claim to know.
The Extended Essay, an independent 4,000-word research project.
Creativity, Activity, Service, requiring sustained engagement outside academic work.
Scoring. Each subject is marked out of 7, giving 42, with up to 3 additional points from the core — a maximum of 45. Passing requires meeting conditions across subjects and completing the core.
How A-levels differ. Typically three subjects, chosen freely, studied in considerable depth, graded A* to E, with no compulsory breadth, research project or extracurricular requirement — though the Extended Project Qualification is an optional analogue to the Extended Essay.
Who each suits:
The IB suits students who are strong across subjects, unsure of their direction, intending to study abroad, or who value the research and independent learning element. Keeping mathematics and a language until 18 is a genuine advantage for some university pathways and for international applications.
A-levels suit students with a clear specialism, those who want to drop weaker subjects, and those aiming at highly specialised UK degrees where depth in three subjects is what is required.
On university admissions. UK universities accept both and publish equivalent offers; the IB is more widely recognised internationally.
On workload. The IB is generally regarded as heavier, with the core representing substantial additional work — and availability in the UK is limited, mostly to independent and international schools.