I don't envy you. It is hard to travel the road of Warrior Mom
when you're opponent is the school system. Many of us have been there done that
and it "ain't" fun.
on the other hand, your childs future depends of maintaining the positives
that have already been developed. You just can't let this teacher or this school destroy that.
You must maintain your decorum and be prepared to have "them"
gang up on you. It can be very adversarial but "never let them
see you sweat" "or cry" "or rant". You can do it.
Go over to the education forum for more support. DDD