Percentage weighting of schools in MAT report calculations
Further info can be found on page 32- https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1134998/Secondary_accountability_measures_2022_guidance_for_maintained_secondary_schools__academies_and_free_scho...
KS2 Banding would be a really useful filter to add as this is a key one (BME/non-BME and attendance would also be good!). KS2 banding is part of the checking exercise data so would match this.
There are times in the year when that is not particularly helpful, e.g. between August-October when there is no data collected for the current Year 11, and staff are analysing exam results for Leavers cohorts.