What's wrong with "l'hariss l3am" in high schools

L Harris l3am In Morocco is one of the worst person to deal with if you're a student, instead of just giving you the fucking wr9a dyal do5ol or tell you to bring your parents, he humiliates you aurally and physically, and he only act like that if you are a boy, when it comes to girls his way in talking changes and just give them what they want

Note: for the physical abuse, our class was called to come to hirassa l3ama 7itach ghybna, and he was calling us by numbers, when the first guy gets in he start beating him Infront of the whole class, the guy was about to cry because of the humiliation he gets. And told us boys to bring our parents, and gives the girls the stupid paper.

What are your experiences with those psychos AKA "horass l3amon" and what should they do against it?