I understand your frustration and empathize with your situation. It is always difficult when our children display behavior like this in the care of others, as we see our children as a reflection of ourselves. My son displays aggressive behavior as well, but I am very fortunate to have a dc where he is accepted and loved and they work very well with him, always keeping open the lines of communication with me.
I agree with Greta, it's possible that the teacher did not fully understand what you were asking her to do. Arguing about the wording of the policy could lead to an unfavorable outcome, but if you explain, the situation may easily be resolved.
Best of luck to you! Let us know how this pans out
