She's a Witch Girl by Kelly McClymer

She's a Witch Girl by Kelly McClymer. pages 254. Teen Fiction. This is a fun one. It's the third book in the authors series. The main character is a teenage witch who used to live as a mortal. She got moved to the witch world when her brother couldn't or wouldn't control his magic. She went from head cheerleader and straight a student to barely making the team and remedial classes. Now in the third book she's out of remedial classes but just barely. She's practically leading the cheer squad. She's also almost expelled. :)