@BlackBarbies you may find this - HOCL Grammar Schools in England, published a couple of weeks ago, of interest, though I'd recommend skipping through the more tedious bits.
https://commonslibrary.parliament.uk/research-briefings/sn07070/
However it reinforces some of the excellent points made on this thread, and debunks most of the more ill-informed ones.
However your thread title might have better started with "why" rather than "what"
The first Blair government introduced the School Standards and Frameworks Act, sections 104 to 109 of which
make provision for parental ballots to determine whether particular grammar schools or groups of grammar schools should retain their selective admission arrangements. A ballot can only be held if at least 20% of eligible parents have signed a petition requesting a ballot.
There has been one ballot - way back in the early 2000s - in Ripon, which failed.
Grammar opponents would argue that the ballot system set out by the Act is highly flawed. An argument that is not without basis. However a removal method does exist.
The wider public seem a bit "meh" about it all, The report linked above references a YouGov survey from last September.
- 26% of respondents held a ‘positive view’ about grammar school selection,
- 23% of people held a ‘negative view,
- 23% wanted to maintain the status quo,66 and
- 28% were not sure.
The age group most likely to hold a ‘positive view’ were those aged over 65 (39% reported this view in September 2022 compared with just 14% of 18-24 year olds).
Broken down by location, people living in the South of England (excluding London) were the most likely to hold a ‘positive view’ (33% reported this view in September 2022 compared with just 16% of people in Scotland).