[quote user1497207191]@cakeorwine
Isn't it graded on ability to do certain skills?
The marking scheme determines the number of marks for each type of question, so, yes, as to total number of marks on a paper, it is marked on ability linked to skills.
But, when it comes to actual grades, not raw marks, the whole cohort is considered and the grade boundaries set in such a way so that x% get a grade 9, y% get a grade 8, and so on. So, yes, every year, there'll be a pre-determined percentage of entrants who will "fail", as the grade boundaries are changed to ensure that happens.
So, Fred, who got 50% (of marks) in 2021 may have got a grade 6, but Mary, who got 50% (of marks) in 2010 may have only got a grade 5, and Hamish, who got 50% (of marks) in 2022 may have got a grade 7.
The justification of that is that apparently, the questions some years are harder/easier than in others!!
Funny thing is that when I did my chartered accountancy exams, there was a fixed pass mark on all papers, it never changed from year to year, nor did it change from paper to paper. The exam questions were set in such a way that they genuinely were at the same level from year to year, subject to subject, and so there didn't need to be different pass marks as exams were never harder/easier than others.[/quote]
Even in my days of O levels and A levels this was always the case. Most kids will be unaffected by this. A tiny minority will have to take a resit. I did. Ok, not great at time but actually was a”silver lining” in the end as that extra year really prepared me for university in terms of working by myself rather than “asking my mates” who oddly weren’t qualified teachers . I had a private tutor - best thing I ever did regards to my academic career.