Every year we complete a statistical return called SSDA903 to the Department for Education. This includes details of episodes of care received by all Looked After Children, their educational achievements, employment and residential status where applicable, along with other outcome data. It also monitors the regularity of the review process, health & dental checks, etc. See here for more details.
This document CLA100 Summary 2012-03-31 contains a graphical summary of basic statistics concerning children who were looked after on 31st Mar 2012.