So, comparing the bucks 11+ list to the top 600 list:
Not many feature, knock off the private schools, really one on that list is just .........Well!
One state primary in the top 600 list had 22/35 pass the 11+ in 2013 including those withdrawn. This was in the chiltern district area, that has high success rates generally.
Another state primary in wycombe area had <5/30 pass the 11+ in 2013 but is in the top 600 for sats in that same year group.
Another is in the ill fated Aylesbury area, but where the local church of England upper is so good that no one in their right mind would bother with a bus journey to a gs, so tutoring is unlikely, but again <5/31 passed 11+ but the school features highly in the top 600 for sats, sane year group.
So two out of the three state primaries I spotted, in the list of excellent high achieving schools had the maximum of 15% pass the 11+ in a test where 30% of the cohort pass and the third school in a very affluent area in highly successful chiltern district had about 65% pass their 11+!
Extra tutoring? Or teaching style? Or both?