Just saw this post and wanted to chime in.
We had the same thing happen with our son, although it turned out he was adhd and odd, however, we didn't put him on the meds immediately, then we took him off. One day the teacher called and demanded I come to school and give him a pill. By law, she cannot ask him if he took a pill or not, which she did. Could have had her ass in a sling. I basically told her where to put it. Teachers don't want to teach anymore, they'd prefer a bunch of drugged out, lifeless kids, so life would be easy for them. Get another profession assholes.