Hazbin High School (Hazbin Hotel high school au)

Demonside High is split into two separate schools: the building run by principal Gloria, the main school for the promising and hopeful, and the building run by principal Morningstar, the school for the outcasts, the lazy, the troublemakers, the addicts, the whores, and...Charlie Morningstar. With perfect grades despite her lackluster teachers, she believes everyone there has a chance to redeem themselves and return to the main school. No one will take her up on that offer, though, until a new teacher comes in to teach broadcasting class, and her plans to start the Happy High School Club are put into motion.