The occult is discussed
14 and up
Comments on Specific Events:
There is a ghost that abused and murdered his wife. There is bullying as well.
Synopsis from Goodreads
Mary just wants to be left alone, but the cheerleaders, jocks, guidance counselors, and ghosts won't stop harassing her. When a new boy starts school, he surprises Mary by befriending her. That's a rare thing for the school freak, but her unusual abilities put a rift in their budding friendship when Mary has to tell Cy that his home is haunted and not by Casper, the friendly ghost.