What is the main difference between IB HL and SL?
The IB states that HL and SL differ in scope and that HL students are expected to demonstrate a greater body of knowledge, understanding, and skills. The recommended teaching time is 240 hours for an HL subject and 150 hours for an SL subject, but the exact syllabus and assessment differences depend on the course.
How many HL and SL subjects do IB Diploma students take?
A Diploma Programme student takes six subjects, with a minimum of three and a maximum of four at Higher Level. The remaining subjects are taken at Standard Level, so the usual combination is three HL and three SL, while four HL and two SL is also permitted within the programme rules.
Is every IB HL subject twice as hard as SL?
No. There is no official universal difficulty multiplier. HL has 90 more recommended teaching hours and greater scope, but the practical difference varies by subject, assessment structure, a student's prior knowledge, and the support available at school.
Do universities require particular IB subjects at HL?
Some degree programmes specify particular subjects and grades at Higher Level, while others focus on the overall diploma score or use different rules. Requirements change, so check the university's current programme page and, where available, its entry in the IB Recognition Statements Database.
Should an IB student take four HL subjects?
Four HL subjects are not automatically more valuable than three. Consider a fourth HL only when the school permits it, there is a clear academic reason, and evidence from current work suggests the complete workload is sustainable. Confirm whether the intended universities actually value or require it before deciding.