Continuity mistake: When Janice gets mad at the class when they don't believe she has a poltergeist, she puts her books and a pencil on the desk. The pencil is seen rolling off the desk, the next shot the pencil is back on the desk. At the end of the scene the pencil is back on the floor.
Visible crew/equipment: After Dr. Samuels comes down the stairs and starts to talk to Charlie, a shadow of a boom mic can be see behind Charlie.
