TMNT: The girl who can see ghosts

I've been watching ghost hunters for a wile and got an idea for a book. A girl who can see, talk, and hear ghosts. Perfect.

Agents At Hogwarts

America and England go under cover as wizards to protect themselves from some lurking evil that wants to control them. Unfortunately, they somehow managed to become teachers, everyone thinking they are human and Alfred... Yes, he isn't exactly as light as Arthur thought him to be.