Kitchen That's right. It's also worth remembering that ability and performance level aren't always matched (not necessarily through the fault of a school not helping a young person fulfil their potential either). but this is a problem for all schools not just comps - grammar schools don't teach kids in 120 or 150 person classes. Even the superselectives don't have a majority of quirky geeky kids (speaking as the quirky geeky (back from when it wasn't trendy, kids today don't know they are born ) mother of quirky geeky kids). Not surprisingly there seem to be roughly the same number of quirky kids at DS's comp as there are at DD1's Grammar.
Although I have issues about school SIZE, because of my DD1's SEN issues, I don't think the environment other than that relating to academic issues is noticeably different between DS's comp and DD1's Grammar.
It is possible that where I live is just odd (well - it is, I reckon, but that may be irrelevant) and it's also possible that the situation is unusual because of the fact that the grammar is superselective, and that far more kids are sucked out of the system round here by the posh schools. It might also be affected by the fact that there are thriving city and county wide 'things' which ensure that many young kids mix outside school no matter which school they go to - for example, my kids go to a theatre group which has loads of kids from the comps and from the posh schools, as well as several from the grammar, it's the same with the dance school - and for these kids, being in the theatre/dance thing is more important to their sense of self than the school they go to. I know there are similar sporty things too. Especially to do with the rugby and swimming and gymnastics.
I know that Curlew, for one, has posted in the past about a real sheep and goats situation where she lives - kids going to different schools never speak again. That doesn't happen here (I think the fact that we have a local sixth form college where many of the comp kids go and some of the posh ones too, while other cpm kids go to the posh schools for sixth form, and some go out of the city, means that few people see their school at 11 as a definite forever choice). and most kids' social lives really don't revolve exclusively round their school.
I didn't think the comp was the right school for DD1 or DD2 but that had nothing to do with the potential friendship opportunities (because DD1 is still really good friends with many kids from that very school and does out of school activities with them all the time).