Schools that add the least value

The measure compares pupils' exam results with those of other similar pupils nationally who had similar prior attainment.

It is based around 1000. The bottom 5% in 2006 had a score of 972.83 and below. They are shown in reverse order.

The ranking needs treating with care: small differences may not be significant.

We have included information on the type of schools and a column showing their GCSE-level results (EM).

Smaller schools, with fewer than 30 students taking the exams, are not ranked.

Click on the name of any school for its page in the main tables.

Click here for a fuller explanation of the figures.