High-stakes exams are a specific genre. Pupils who know the content well can still fail if they don't understand the conventions of the exam — what command words mean, how marks are allocated, what 'analysis' looks like in this subject's mark scheme, how long to spend on each question.
Teach the exam explicitly. Give pupils the mark scheme. Walk through 'what an examiner is looking for' on each command word. Use past papers throughout the course — not just in the final term — so pupils develop fluency with the format long before the real thing.
