For the backstory, I am in the 11th Grade. A dude cheated in a test and the teacher had her own doubts. She wanted to orally grade him (in front of everyone) and I told my classmate "how about she grades him (written) again."

She heard me and did just that, saying that "Ms. Cryoniko came up with a great idea, get out a piece of paper." She didn't pay attention to him during the test, so he could have easily done it again, while in front of the class he would've made a buffoon out of himself. 

For whatever reason, he didn't cheat (and he failed), and at the end of school I almost got beaten by the guy. I did not apologize yet and I'm still receiving vague threats from him through a popular messaging app. 

Note: he perfectly wrote the commentary our teacher sent us, word by word, while completely failing every single class including the one he cheated at. It was supposed to be shady from the beginning.