Schooling Carmen by Kathleen Cross

Blurb (from the product description on Amazon):

Desperate to stand out in a family of overachievers, beautiful, bigoted, and bitchy Carmen DuPrè will do anything to leave the "hellhole" high school she works in—even if it means getting groped by a geezer who's promised her a promotion. She's not worried about things getting out of hand though—if there's one thing Carmen knows, it's how use her looks to get what she wants—including courtside Lakers seats and...