teachers piss me off so much

So like i was in art class tired asf and the teacher was explaining something that i didn't really understand and i already have a hard time paying attention so instead of helping me better understand what he was saying he basically called me out for not understanding and falling asleep (I have a bad sleeping scheduled that I'm trying to fix. im supposed to be on sleeping meds but my mom wont bother finding me a doctor to prescribe me any bc my other doctor didn't like my mom) and made me look and feel like i was an idiot. he made sure everybody heard what he was saying and didn't wanna speak to me privately and embarrassed me. Then got mad at me when i just decided not to do it because he didn't want to explain it again and didn't want to help me. He praised every other student and completely ignored me instead of literally just simplifying what he said to not waste time giving over it with extra unneeded details. 

I might just drop out honestly. MIGHT.