Golden Girls — Melissa J. Morgan

During Color War, Natalie buddies up to the sixth division girls and ditches her fifth division friends, who couldn't be more immature. Then Nat inadvertently catches the attention of a sixth division boy, and without so much as a blink of an eye, she's kicked out of the sixth division circle flat on her fifth division butt. Will Nat's friends take her back? Sure, but first she'll have to own up to a lot of immaturity on her part.