From reading the forum, I know that it is not an exact science, but could anyone please give me an idea of what percentage is needed to score, say 118 for the Slough consortium (which I think is around the required mark) for a 10 years 6 months child. And the same for the Bucks schools (not sure what a good mark would be there).
The qualification mark in Bucks is 121 every year. (It can theoretically vary, but it doesn't.) This thread will show you what that equates to as a raw score - all the 121 marks on it are actual scores obtained through an FoI request last year viewtopic.php?f=12&t=18356
They do change from year to year, so they are only a guide, as you will see.