* A BBC Radio 4 programme has revealed that schools identified as among the most improved in England have low levels of achievement in English and maths.
Sir John Cass secondary, in Tower Hamlets, east London, has been named as England's most improved school. Last year, 87 per cent of its pupils achieved five or more A*-C grade at GCSE or the vocational equivalent.
But the school only scored 27 per cent on an alternative measure: the proportion achieving five or more GCSEs including English and maths, according to the BBC.
Richard Wallis, the head of Sandwich technology school, in Kent, this week won the Headteacher of the Year award after its headline results improved from 34 per cent in 2001 to 64 per cent last year. Last year, only 20 per cent of its pupils achieved five A*-C grades including English and maths.
Overall, 17 per cent of schools in England which the league tables say have improved since 2001 are actually achieving worse results on this alternative measure.