@TizerorFizz
By the end of Y8 my DDs were working hard at all subjects. They really could be bothered.
Ofsted will be ok with 3 year gcse but want the curriculum covered to some extent in ks3 year 3. I suspect Martial arts and badminton won’t hack it.
Ofsted have made it very clear that they will pretty much not give an outstanding rating to a three year GCSE.
I don't know about your schools, and where they find the money to run after school clubs - people who do this need to be paid, and most teachers don't have the time resources to devote to after school and lunch time clubs (our school can't give the hall during lunch time, in any event, as is needed for lunch, and in fact lunch is split into two sittings with some years having class while others are having lunch, and vice versa - making lunch time club running very difficult). I assume of course that these schools are in fact making these after school and lunchtime courses on offer for free, so that everyone, regardless of financial bracket, can take part.
The KS3 curriculum is exceedingly narrow. And what is covered in PE and Art and Music often puts kids off - especially if they are not "good" at those subjects by the definition of what is required for the GCSE. The idea of having the teachers teach something that interests them, without the pressures of exams, as a way of trying to give DC a sense of why it is that they ended up in this subject (astronomy by the physics teacher, singing by the music teacher), and that there are other options outside of the narrow curriculum that they can explore in their own time, seems to me a brilliant idea. I remember another of DS's choices was psychology - taught of course by the sixth form psychology teacher - meaning that DS's year had some exposure to the subject before they chose it for sixth form - or didn't in DS's case as he did the classic biology, chemistry and maths.
I too fill and filled up my kids out of school time with after school classes and summer day camps in drama and music and non classic sports and the like (my DS did fencing out of school and tried sailing and several other alternatives), but not everybody has a middle class mum who can hunt for these things and enable their participation (both financially and in terms of practical and emotional support - ie in valuing wider alternatives). I myself went to a fancy private school where these alternatives were part and parcel of what is available. A lot of DC's parents don't have that background, and have no idea what is "out there". When my DD did it, it wasn't so much martial arts, as self defence, which is something so few girls get (although it was taught through a martial arts lens).