Optimal Subject Selection for 45 Points
The IB Diploma requires six subjects: three at Higher Level (HL) and three at Standard Level (SL), plus the Extended Essay (EE), Theory of Knowledge (TOK), and CAS. The maximum score is 45: up to 7 points per subject (42 points total) plus up to 3 bonus points from TOK and EE (awarded on a matrix: an A or B in both earns 3 bonus points).
Strategic subject selection for 44-45 requires identifying which subjects in your school's IB programme have the most consistent high-grade outcomes — this information is available from your coordinator. Globally, the subjects with the highest average scores include Studies in Language and Literature (Language A SL), Environmental Systems and Societies (ESS, which counts as both a Group 3 and Group 4 subject), and Mathematics: Applications and Interpretation (AI SL) for students whose strengths are verbal rather than mathematical. However, university admissions for competitive STEM programmes typically require Math AA HL, so subject selection must balance optimal grade potential against course prerequisites.
The HL selection is the most consequential decision. Choosing three subjects with genuinely high-scoring potential based on your own strengths (not based on perceived prestige) is the single most impactful strategic decision. A 7 in Chemistry HL matters more than a 5 in Physics HL if Physics is your weaker subject, regardless of relative prestige. Extended Essay subject should align with genuine depth of interest, not just academic performance, since the EE requires sustained motivation over eight months.
SL subjects should be selected to free cognitive bandwidth for HL preparation and the Core. ESS is a popular dual-group option (Groups 3 and 4) for students who find it manageable, freeing a slot. If a student's HL choices are already two sciences, ESS as SL satisfies both Group 3 and 4 requirements with one subject, allowing the third SL to be a language or elective that can be prepared efficiently.