What to know about the International Baccalaureate curriculum
The International Baccalaureate Diploma Programme (IBDP) is the dominant international curriculum for students aged 16-19 who don't yet know which country's universities they'll target. Born in Geneva in 1968 to serve diplomatic and UN families, it now runs at 5,500+ schools across 160 countries — and crucially, every major university system (US, UK, Canada, EU, Singapore, Australia) accepts it on first-class terms. For a Turkish family who isn't yet sure whether their child will study at Boğaziçi, Imperial, Stanford, ETH Zurich, or McGill — IB hedges all of those simultaneously.
The structure is broader than national curricula. Students take six subjects (three at Higher Level, three at Standard Level) spanning languages, humanities, sciences, mathematics, and arts. On top of that come three core requirements: Theory of Knowledge (a year-long epistemology course), the Extended Essay (a 4,000-word independent research paper), and CAS (Creativity, Activity, Service — minimum hours of extracurricular engagement). The total assessment is graded out of 45 points; 40+ is competitive at top universities, 38+ is solid for most Russell Group / strong US.
Compared to national curricula, IB Diploma is breadth-prioritized. UK A-Levels let students pick three subjects and go deep; AP lets students pick whatever they want. IB requires a science, a humanity, a language, and maths — every IB graduate is academically a generalist before they specialize at university. This is the real philosophical choice: do you want your 16-year-old to commit early (A-Levels, AP focus) or stay broad through to university (IB)?
Universities respond accordingly. UK universities convert IB to UCAS tariff points; Imperial / LSE / UCL routinely require 38-40 points with specific HL grades. US universities increasingly use IB scores in admissions decisions and credit-by-exam (Stanford, Harvard, MIT all give credit for HL 6/7 grades in specific subjects). Canadian universities (UofT, McGill, UBC) accept IB as their preferred international qualification. ETH Zurich and EU universities give the highest direct admission rates to IB graduates of any non-national curriculum.
Where IB struggles: students who need a more sequential, less self-directed approach. The Extended Essay and Theory of Knowledge components reward independent thinkers; for students who prefer structured exam-prep, A-Levels or AP can feel less stressful. IB workload is genuinely high — 6 subjects + EE + ToK + CAS leaves less weekly margin than A-Levels' 3-subject structure. We've had students transfer from IB to A-Levels mid-stream because the breadth was overwhelming; it works the other way too.
Where IB shines: students who haven't decided their university destination, multilingual students who can leverage Group 2 language credit, students with serious extracurricular commitments (CAS rewards rather than competes with sport/music/community work), and students from non-Anglophone schools who want fast onboarding into an international academic culture. Turkish students at strong Anadolu / Robert Lisesi who pivot to IB Diploma at age 16 typically do well — the academic depth was already there, IB just internationalizes the credential.
"I tell families: IB is the right answer when you don't yet know the right answer. If your child is committed to Oxbridge engineering, do A-Levels. If they're between Oxbridge, Stanford, ETH and Boğaziçi — pick IB and decide later."
— Kevin Park · UK Boarding Specialist, London
