Eccentric wrote:
I am interested to know how many hours of evening, weekend and holiday homework and study schools expect GCSE course students in years 10 and 11 to do to get optimum results?
Hw many hours have your DD's and DC's spent on average in each year and how have their results correlated?
DS1: What he was given, can't remember it being a huge burden. School did a lot of revision classes. 7A* 3A B C
DD: Year 10 not always as much as was set

(which again didn't seem to be particularly onerous), warned unlikely to be able to get previously predicted grades in some subjects. Year 11, realised year 10 had been a bit of a mistake, got her a into g and ended up with 4A* 6A (including their numerical equivalents).
Overall, I would say both of them did about the same as KCG's DS1. They also both carried on with normal out of school activities, although DD did drop most of her YL sessions with Cubs during her actual GCSEs. This was her decision, not something imposed on her by us, nor yet suggested by their schools.