The Sister Switch

"Twins Andie and Caitlin are best friends but they couldn't be more different. Andie loves sports and hanging out with her friends, Caitlin is passionate about music and loves learning at school. Now that junior high is starting, the girls will finally get a chance to pave their own way. They can't wait! But when Caitlin discovers she'll have to pass a fitness test or spend every day after school doing gym, she fears her year is ruined before it even begins"--Publisher