Hi, I am a teacher transitioning into nursing. In my state (GA) all educators are bound by the "code of ethics." I don't know if other states have similar codes of ethics. If possible check to see if this teacher is in violation of the code or maybe the teacher may be violating rules and regulations set forth by the local board. You could probably explain the situation to the principal and see if the teacher is in violation of either of the two. The code of ethics has a lot of gray areas so the teacher may not be aware he/she is doing something wrong. Without me knowing more about the situation, it is hard for me to say.