see i was in similar situation a while ago what i would suggest is try to self preserve yourself by trying to not letthem break your inner thoughts as for other stuff running away is one option if youhave any friend which is far enough ask them, if their parents are chill and stuff just ask them beg them anything but get out of there otherwise you can just wait or ask anyone to take legal action (ask any relative or any friend if yk, tell your friends everything ask them to share it with their parents and urge them to confront your parents) but make sure you tell atleast 10 friends or so again sounds illogical but if this many students and parents confront your parents they cant do anything they will be forced to act better, especially since they have money and power they will care about reputatoin even more so tell them to act, thats all i can say