Am speechless- but not surprised, tbh.
Yes, top private schools do pluck clever, poor students out of state schools, not necessarily in an act of altruism, though, but to justify their charitable status and to boost their academic success ratings.
They take these DC out of often, large, all-comer comps with the usual panoply of big classes, poor equipment in falling down buildings, a demoralised work force, challenging behaviours, disruption, SEN, both diagnosed and not (and even then poorly funded), some low community expectations and so forth; and then place them in small classes of clever, motivated fellow pupils, in beautiful buildings with top of the range equipment, better paid staff, forensic guidance, very motivated parents- and thus they head off to Oxbridge.
Louise Richardson, Oxford Vice Chancellor muses that state schools are failing 'their brightest' (those left after the indies have creamed off the ones they want) by not offering a similar service.
How can you be so lacking in critical thinking skills yet get to be VC of Oxford?