Got any cartoon ideas? (NO, NOT ANIME!)

I thought of a cartoon about a kid who befriends the ghost of his great grandfather, only he's nothing like his great grandfather and looks like the typical ghost. The boy must disguise his ghost in order to bring him to school with him so he can be "normal." The only problem is, a girl at his school who is a huge ghost freak, has a highly trained team of ghost hunters who follow her to school to search for ghosts. The boy and the ghost must survive middle school without their secret being blown.