Hogwarts is full of people, both nice and mean.
Classes include Defence Against the Dark Arts, Potions, Muggle Studies, Astronomy, etc.
Teacher examples include Professor Snape, Dumbledore, McGonagall, and others.
Four Houses: Slytherin, Hufflepuff, Ravenclaw, Gryffindor.
Slytherin Students: Mean, Cold, Usually A Death Eater, Purebloods, Bullys.
Ravenclaw Students: Smart, Friendly.
Hufflepuff Students: Nice, Cute.
Gryffindor Students: Smart, Courageous, Leaders.