DS is just starting yr8 and having read his report, appears to have finished yr7 on a lower grade (3a) in English than he got in his Yr6 Sats. The school was recently marked as inadequate by Ofsted and there are lots of changes being made but good teaching staff has always been an issue at this school unfortunately.
Would you email his new English teacher now to let them know you're aware there's a problem or wait till parents evening in October to see what they say?