I think there is a big misunderstanding but in order to clear it up I would like to know more about what you think I mean.
To give it a go: I think high attaining students benefit from a like minded peer group, who value education. Emphatically, this statement has nothing to do with socioeconomic status. My DF was seconded to a very expensive American city for my high school years. We lived in an upscale suburb and i saw first hand that being rich or having high achieving (or pressurising) parents need have nothing to do with valuing education.
So yes, students with talent and ambitions need peers. Also mentors. Where do they get them? Perhaps school can provide this, perhaps not - the needs of the many rightly come before the needs of the few. And the state school teachers and staff I know are doing everything they can already.
I was thinking of the relatively small number of uni outreach experiences in the UK, open to all but at very small scale, or the Sutton Trust and Oxbridge outreach which do focus on pupils from disadvantaged backgrounds but IMO too little, too late. Still a big step in the right direction, however.
A number of independent schools articulate the ideal, but it doesn’t seem to translate to reality: talented, aspiring pupils from different backgrounds have a lot to offer each other . Some could impart confidence and optimism, others tenacity and grit. Different learning styles. Etc. Pupils from different backgrounds should be banding together. I hate that this ideal has deteriorated into a cynical PR exercise.
How can this ideal be achieved? Because state school teachers and staff are so overstretched, my thoughts went to an extracurricular structure. Should or should not independent school pupils be eligible? They may need less help, but socioeconomic segregation is undesirable.
For that matter, one could make a case for focusing enrichment resources on Q1-Q2, because their medical school entry statistics lag so badly, or this could seem wrong on the grounds that it segregates them.
Which would you prefer?
Now I would like to know what you meant in your post?
BTW I was educated abroad in a completely different system.