IMO private schools should be banned. Everyone should have the same chances when it comes to their education.
Well I can tell you now that banning private schools won't do that. It would barely even scratch the surface of the problem. It would just level the playing field a bit for all those the quite clever, middle class, state educated (probably grammar school) kids, and give them a fighting chance of getting ahead of the quite clever and extremely rich or upper class privately educated kids.
It would do fuck all for thick kids, and fuck all for lower middle class, WC or poor and disadvantaged kids of any intellectual ability. They'd still be poor and disadvantaged and they'd still be going to the same 'bad' or mediocre schools largely in non-affulent areas.
Show me a 'failing' state school with terrible results and serious issues with behaviour/attendance in a middle class, leafy, expensive area with a high intake of middle class affluent parents. There isn't one.
Which does rather lead one to the consider the idea that there is probably no such thing as a failing school - merely failing pupils. And that is almost always linked to the low socio-economic status of the parents, whether we like to say it out loud or not.
People have this odd notion that by forcibly mixing up up the intake demographics (social engineering) we can somehow make a 'bad' school 'good.' And yet we are told time and time by people who like to champion the poor plucky underclass underdog that it's the schools that fail the children, not the other way around, and that socio-economic factors (or just good old fashioned class) have no real bearing on intellect, on aspiration, on discipline, on performance, on behaviour etc. And that there is some sort of conspiracy to keep poor children from proving that they are all as clever as the next person.
The reasons why poor children are (on the whole) statistically less likely to achieve in education are very, very complex, and it's probably impossible to ever significantly reverse or eradicate that. Unless you want to start eradicating the real causes of it, ie. practising eugenics, or forced sterilisation of the feckless, the vulnerable, the intellectually impaired, the criminal, the substance abusers, the mentally ill, the violent, the lazy, very young parents, lone parents, parents with lots of children they cannot properly support, financially or otherwise, children of poor immigrants who have English as an additional language, in fact anyone at all whose personal circumstances might have led to a label of 'disadvantaged' being stuck on their child. Because they will always make up a significant proportion of the people who are poor, and a very significant proportion of those children who consistently under-achieve in education. some of those children are disadvantaged from birth and by far more than just the school they get lumbered with.
Of course there are plenty of poor (and sometimes high-acheiving) children who are not significantly disadvantaged by their parents, but as far as the statistics go they do not get separated, (apart from by ethnicity) and I imagine they are largely judged, measured and monitored by their socio economic status alone.