2014newme. So, by "They should have enough been doing the extra classes all year" you mean "the teachers who already do loads of unpaid work outside of the school hours should have done a further extra 5 hours, per week, all year." Do you routinely work an extra day or two a week at your job for free?
Also for the majority of the year who didn't apply for the head girl/boy stuff, the only time out of lessons was the quick explanatory meeting about it, which looked as though it would have been part of their normal year assembly anyway, and then the 'debate.' So maybe one hour out of their normal schedule. How would that have made the slightest bit of difference? However it was a boon for the 5% of the year that did appear to actually try hard.
I agree with the bad behaviour ruining it for everyone else. If you have 36 in a class, you only need 2 or 3 who are disruptive to put everyone off.
I found it shocking when they talked about the top set for the mocks and said there were one or two 6's, a few 5's, and then the rest were lower. So even in the top set the best mark was a B. I didn't go to a great school, but even if the target 5 A-C for the whole year results weren't great, there were always a few pupils who did get good grades (As & A*s) even if they did it mostly themselves because the teachers were concentrating on the bad behaviour/borderline students.