Continuity mistake: In the episode "Don't Have a Cow" When Chelsea drinks all the punch, you can see that her face is soaked. The next shot you see of her, her face and hair are dry.
Continuity mistake: In the episode "Campaign in the Neck" When Chelsea is going around the school and talking to the different people she's wearing yellow pants, yet in the cafeteria she has plaid red pants on instead of the yellow ones.
Continuity mistake: In the episode "Don't Have a Cow" When Cory is talking to his dad about not trick or treating with him, look at his barbell. The number "one" written on it keeps appearing and disappearing between shots.
Continuity mistake: In the episode "A Fish Called Raven" When the clown crashes through the window, Chelsea starts taking pictures after the clown is in the room. However, in the newspaper article, you can quite see the picture of the clown just crashing through the window.
Continuity mistake: In the episode, "My Big Fat Pizza Party," when Chealsea and Raven are making the giant pizza, the pepperoni slices Chealsea throws on the pizza are normal sized, but when they come into the dining area they are giant.
Answer: Psychic ability run in Raven's family, while the abilities skipped a generation with her mother, her Grandmother Viv was also a psychic.
OneHappyHusky