Ofsted collects data on the use of streaming and setting in lessons observed during inspections, the latest period for which their data indicate the proportion of lessons in each school year which are set by ability is 2002/03.
Percentage Year 7 28 Year 8 38 Year 9 43 Key Stage 3 36 Year 10 37 Year 11 40 Key Stage 4 39 Overall Secondary 38
Until 2002/03, Ofsted recorded lessons observed during inspections as being set, streamed, mixed ability or otherwise organised. For clarity, ‘setting' is the term used to describe the organisation of pupils in classes on the basis of their prior attainment in the particular subject being taught. The term ‘banding', which is very similar to streaming, is used when the decision as to which pupils are included or not in a class is based on the prior attainment in a range of subjects.
From 2003/04 the distinction between streaming and setting was removed and Ofsted now record data on whether classes they observe are mixed ability or set/streamed. They no longer record data on setting alone. It is therefore not possible to provide data on the proportion of lessons which are set for the period from 2003/04 onwards.