Question to the Department for Education:

To ask the Secretary of State for Education, what proportion of pupils changed schools between reception and before taking Key Stage 2 assessments in the academic years (a) 2010-11, (b) 2011-12, (c) 2012-13, (d) 2013-14, (e) 2014-15 and (f) 2015-16.

The closest available published data, the proportion of eligible pupils classified as non-mobile (classified as those who did not move school in the 12 months preceding the census date) at the time of the Key Stage 2 assessment, is published annually on the Performance Tables website at:

https://www.compare-school-performance.service.gov.uk/download-data

In 2015/2016, 92% of pupils in maintained schools were non-mobile at the time of the Key Stage 2 assessment.

The information required to answer this question is not held and compiling it would be a very complex task which would incur disproportionate cost.