Question to the Department for Education:

To ask the Secretary of State for Education, what assessment his Department has made of the effect of over-capacity in (a) classrooms and (b) school buildings on children's academic progress in schools.

The information requested is not held centrally.

The latest data[1] shows there are fewer pupils in excess of their school capacity when compared with 2010; reducing from more than 97,000 in May 2010 to 54,000 in May 2017.

[1] The annual school capacity survey 2017, available here: https://www.gov.uk/government/statistics/school-capacity-academic-year-2016-to-2017.