Truly comprehensive education, where children get to see that it takes all sorts and mix with families from both ends of the social spectrum. But it doesn't exist in UK because "nice" families don't send their Dc to the same schools as "rough" families.
I don't think this is true at all. Esp from past decade when credit crunch came into being. Not every parent who wants to or even can ££ put dc into private does.
My sibs went to comps and there was a mix in them. Many parents including my own Df are/were staunch Labour and would not have considered anything else in spite of being able to afford it. Look at Paul McCartney. I have spoken to some wealthier parents at DD school and they would rather put money elsewhere, into nice house, or don't agree with paying for it.
Housing round me, is pretty diverse, so most schools get a mix of all sorts even the private ones.
However I know there are some HUGE estates and pockets of extreme deprivation out there, maybe its harder to get a mix there....but how many of those are there?
I mostly see mixed housing where ever I go, and the majority of dc will be attending local schools.
I think all schools have potential to allow, rough behaviour. We are all capable of it! Its how the school deals with it, including private. I think this is why schools build up bad reps.
For small instance school local to me, at one point, seemed tons of scruffy students, lighting up as soon as got out gates, nasty vile language, aggressive and rude....I used to say over my dead body DD will go there. Shortly after noticed it was in special measures, about a year later, just feel and look as an outsider I can tell, they are turning things round, no more smoking, pupils smart, under control....same dc, same places come from, different head.