The department does not hold figures on class sizes for dates throughout the year. Class size is recorded annually on the January school census day and is regarded as a representative sample of class size. The figures are published here: https://explore-education-statistics.service.gov.uk/find-statistics/school-pupils-and-their-characteristics.
The table below shows the average primary and secondary class sizes for the Bexleyheath and Crayford constituency, the London Borough of Bexley, Greater London and England and for the 2021/22 academic year.
Average class size in the 2021/22 academic year
Bexleyheath and Crayford
London Borough of Bexley