The only thing worse than a boring teacher is a mean teacher.
But you don’t have to just lie there and take it.
There are helpful strategies to face the situation.

Rather, remove yourself from the situation, perWestern Governors University.
The next thing you have to do is gather evidence of your teacher’s misdeeds.
It’s sad to admit it, but not much attention is paid to teachers who bully, perWebMD.

Then you better report this teacher, preferably with evidence in hand, per Very Well Family.