Omg there is this annoying a$$ boy in my cl who always talks about me in cl out loud it didn't bother?

me until of paper out of nowhere kept flying towards me and i do not think they just came from that boy. Then when i write the teacher about asking her if i could leave early because he was messing with me she says, "Who's picking on you?" Out loud and these two girls heard her and i was and still is so embared. I've slapped him hard twice before but it didn't work apparently. he is so imature he's a senior in high school. the whole cl that im in is imature and they are all seniors and they laugh at everything and everyone. it hurts my feelings and its to the point when im like *uck you. I even plan on skipping that cl for a day it stresses me out. Also i told the teacher that i think she is a bad teacher and that it hate her cl. She just said ok. And I'm thinking *uck her too. How do i deal with this annoying class and it was an annoying person, but the whole class pisses me off.