DS is in year 1 and has been in the top phonics set since the start of the year. Teacher always very complimentary about him, even commented at parents evening 3 weeks ago that he's doing extremely well for a summer born boy. Yesterday he was moved into the bottom phonics set after performing poorly on an assessment last week. I don't understand how a kid's reading can deteriorate from top set to bottom set in a few weeks. Either a) he's been in the wrong group and struggling all term, which is not ok, or b) something went wrong with the assessment and he's been moved down to a group that's too easy for him, which is not ok or c) his reading has got dramatically worse in 3 weeks, which is worrying.
Having spoken to the teacher today she contradicted herself several times and I've got no clear answer. So I've drafted a letter to the headteacher. AIBU? Am I being "that mum"? Or would you want answers too? (Fwiw DS is very cross he's been given a "baby book" instead of the books he was rather enjoying.)