DetailsExternal assessment (written exams) contributes 80% to the final grade that a student earns for either Maths HL or SL. The Internal assessment component, the Exploration, contributes the other 20%. For Maths SL a student will take two exams and for Maths HL a student will take three exams - two covering the HL core syllabus and a third exam covering the one HL Option topic that they"ve studied (and for which they...