In the classroom when Eddie and Chelsea are passing notes Eddie is the last one to write something, but when Raven reads it, the last line on the note is from Chelsea.
When Raven takes the trash can to her seat, the lining is falling down into the trash can. But when she arrives at her seat, the lining is around the edge nice and neat.
When Raven has the vision, her hand is on her chin, when it cuts to a different view her hand is on the table, but when the camera zooms out of her eye, her hand is back on her chin.