'League table' information on school effectiveness in England generally relies on either a comparison of the average outcomes of pupils by school, e.g. mean exam scores, or on estimates of the average value added by each school. These approaches assume that the information parents and...

Government and researchers use school performance measures such as contextual value-added to claim that giving schools autonomy from local authority control produces superior pupil performance in GCSE examinations. This paper explores the extent to which inferring causality between autonomy and...