Hogwarts School of Witchcraft and Wizardry was founded along time ago by four wizards with conflicting pesonalities.Those wizards/witches are: Godric Gryffindor, Helga Huffelpuff, Rowena Ravenclaw, and Salazar Slytherin. However, before long Salazar tried to create a school where only pure bloods were accepted. This idea was not approved by the other three and Salazar had to leave. But before he left he built The Chamber of Secrets which caused a perpetuated line of havoc until Harry Potter killed the monster in side. Hogwarts is the main setting for most of the Harry Potter books.