Within an 12 mile radius of here we have:
No selective state schools
No single sex schools
8 state secondary schools
(plus one small independent school)
Of the 8 secondaries all have had recent Ofsteds:
4 are in special measures
2 are satisfactory
1 is good
1 is outstanding
GCSE (5 incl Maths/English) national average is 46.7%
Only one of the 8 schools scores above the national average, and that's only 60% - so it's not as though they are creaming off a highly intellectual elite! Most of the schools are way down in the thirties, and one barely makes it into double figures!
The region has some areas of high deprivation, but nothing to explain results like this IMO.
Is it just all the in-breeding or what?!