Things teachers are NOT legally allowed to do (things you can actually SUE THEM FOR):
-Taking your things without reasonable cause (because you were texting in class does NOT count as reasonable cause, for example.)
-Forcing you to stay after school (After school is done, you can leave no matter what they say and they can't do a damn thing about it)
-Looking in your locker without reasonable cause
-Physical punishment
-Harassment (if the teachers are bullying you constantly, you can get them fired. I'm not kidding.)
-Invasion of privacy (again unless there is reasonable cause, thanks for reminding me, maroon)
Teachers are literally powerless, don't put up with any of the things listed above. If they do any of those things, take some loving action.