Can he they do this to me how can they treat me so poorly i just want some help and advice?

Ok so here is my story a while back i got a concussion'sn and now i have seizures from this and they get brought on when people yell at me and i am a freshmen in high school and i have heard so many stories from other people about the teachers at my school and now that i am here its horrrbiel i just got (oss) out of school suspension for yelling at my teacher when she told me i was nothing i would never be nothing and i didnt have a personality well wouldnt this piss u off so i yelled at her then the vp took her side and gave me oss he tries to do anything he can to hurt me emotionally they all do and i wanted to drop out but of course my parents said no and i am only 14 so i cant yet and about a few weeks ago i tried killing myself and now i dont know i kind of feel like doing it again the only reason i am not dead right now is because the cops came and sent me to a hopital for trying to kill myself and now school is just hurting me worse and i want to give up so tell me can my school treat me like this like i am just nothing like i am just there to bully Help????????? PLZ thanks for letting me take your time