Claudia, Queen of the Seventh Grade (The Baby-Sitters Club #106) (Baby-sitters Club (1986-1999))

At first, Claudia hated going back to seventh grade. But things are definitely improving. She's on top of her schoolwork, she's made some great friends, and her new classmates really look up to her -- so much that they nominate her to be Queen of the Seventh Grade. And when the votes come in, the results are clear: Claudia's not just adjusting to seventh grade, she's ruling it!