The school library. Just the school library...Maybe some secret chambers and doors around, but mostly...a regular library.

*In the library, there are books on how to control certain abilities, potions, books on spells, and normal books. There are also secret, hidden rooms in the library that lead places, but only one of the four librarians know about it. Maybe if you get on the librarian's good side, she might tell you where the hidden rooms are and how to get there. Maybe...*