I don't. If you have grammar schools, the most able/supported children all go there, leaving the rest in a right old state.
Kent is awful. There were four co-ed (using this term as I don't know the correct one) non selective schools in our town, and three grammars (one co-ed, one each single sex).
If you're fortunate enough to pass, you just go to the grammar you prefer. Great. If you don't, you have a choice now of three co-ed schools, as one was put in special measures a few years back and finally closed down.
All of them are horrible. Yes they have good facilities at one of them but the behaviour is terrible; the other two don't even have good facilities.
Ds was in one of these, and the staff were great and tried to help but he could not cope with the constant low level bullying,
There is no other option but to HE and for a lot of people that's not even possible. Children have utterly miserable lives at these schools, while those at the grammars have a lovely time (I know - I went to one of them).
If all the schools took all the children, and streamed them inside the school, rather than segregating into 'elite' and 'ghetto', it would be so much better. It's not fair. And I say this with another child who probably will get into the super selective.