Or stab the kid next to you everytime he blinks
Cry whenever the teacher says anything
During the pledge- cry
Cry
Kill them cry
If this is about the best way to portray a character overreacting, perhaps have him/her rant about the sexism in a certain piece of work the teacher is talking about or about the racism or animal cruelty or whatever. If the student then gets even more upset when the teacher keeps arguing, have the student walk out of the room or try to start a boycott of the teacher and try to get the rest of the class to leave with her.
Jump out the window
Raise your voice and keep arguing depending on the situation.
stand up, stay quiet, get the attention, then crouch down then jump up and yell from your gut!! whatever you need to say and say it loud and repeat important words then glare at everyone and get sassy then walk out and raise your mdidle finger up
Tear off all your clothes and run around n circles laughing
Go full hentai on the teacher's ***..