I wish the system would change in England. It just seems so unequal and unfair. My kids are still very young but I'm reading this thread avidly!
I went to school in Scotland, a local state academy with a large intake, over 1300. The choice in our town was this school, the catholic school miles away or private (knew nobody at private school).
It was very mixed socially. Teaching was very mixed too. Facilities weren't great but there were museum trips, ski trip, french exchange, sports teams, chess club, but no swimming pool.
They catered well for the bright. 3 sciences, Latin, extra maths etc and many of my peers went to Scottish Universities to study civil engineering, marine biology, law, medicine, geography, politics. Oxbridge was not on our radar.
There were good vocational choices, food tech, secretarial studies plus woodwork, technical drawing etc. back then many low and mid ability kids left at 16 and went to the banks, the army, nursing and employment ( hairdressing, woollies) or apprenticeships.
The people I'm still in touch with are, again, so mixed. Some are well known, political aide, indie band singer, football manager, criminal lawyer. Some are very rich, self made, entrepreneurs, some are sadly dead or in prison.
Most are employed and suburban.
I do think the educational system worked well for the majority. It felt like an even playing field and I only really encountered snobbery and status around education when I moved to London.