Comment by rcxdude

And yet students at independent schools are twice as likely to get all As than those at state schools. Do you think it's likely that all the smart students happen to have the means to go to the independent schools? Keep in mind the grades are not the main filter for oxbridge: probably the largest is whether the students apply in the first place, and then the latter is the interview, which matters a lot for determining which people with good enough grades are actually good enough to get in.