Izuku, tell Inko, Inko, make a fuss about that, you can trust me, while they don't give 2 shits about complaints from students, they will fire/expell anyone if the parent makes the complaint.
These guys just can’t take a break can they? Some things came to my head and uhm here they are 1. Move schools, 2. Kill everybody. (Well everyone who hurt you), because let’s be honest villain deku is fashionable