The proportions of sixth form students who achieved three or more A grades at A-level in 2008, by type of school, are shown in table 1 of the statistical first release ‘GCE/VCEA/AS and Equivalent Examination Results in England, 2007/08 (Provisional)’:
http://www.dcsf.gov.uk/rsgateway/DB/SFR/s000816/index.shtml.
The information broken down by school type has been placed in the House of Commons Library. Only figures at A-level are fully broken down by all grades and figures for GCSE are provided using the A*-C and A*-G breakdowns.
Full grade breakdowns for GCSE and the equivalent figures for AS-levels can be provided only at a disproportionate cost.