DS has been working consistently during year 12, good report from school etc. He started revising for end of year exams in good time and we also decided to get him a tutor to make sure he was on track as he needs high grades for the course he wants to donat university. He was consistently getting As on all test and past papers during this time. Come the actual exam and he found it really hard. It was written by a teacher at school. He got a grade D. We questioned how good the tutor was and have now got another one who also teaches a level maths full time. He set DS a diagnostic exam and again he got an A. He’s been working with DS and thinks he’s good at maths. School refuses to give DS the exam paper for maths as apparently it’s confidential so we can’t see what happened. Can anyone understand.