OFSTED are using this rubbish to inform judgements of schools. This is unfair and wrong.
The letter below states that "Seven of the 12 E-ACT secondary academies for which we have data were in the lowest 40% of similar schools for progress made in English. Eight of these 12 academies were in the lowest 40% of similar schools for progress made in mathematics."
'Similar schools' are random and do not mean anything whatsoever. OFSTED should not use OSDD to judge schools.
Thanks to Laura McInerney for making the letter to E-ACT public. in the linked file below