A few miscellaneous titles....

Alt Ed by Catherine Atkins (NY: Speak, 2003).
CIP Summary: "Participating in a special after-school counseling class with other troubled students, including a sensitive gay classmate, helps Susan, an overweight tenth grader, develop a better sense of herself."
Good for grades 7 & up. Language, intense & sexual situations.

Scarlett Fever by Maureen Johnson (NY: Point, 2010).
CIP Summary: "Fifteen-year-old Scarlett, who is beginning to get over her break-up with Eric, stays busy as assistant to her theatrical agent friend who is not only promoting Scarlett's brother Spencer, but also a new client whose bad-boy brother has transferred to Scarlett's school."

This is the second book in the series, but I had no trouble diving into the characters and plot. Scarlett is a lively outspoken teen, and the novel is an easy read, though it deals with some serious issues, too. Grades 8 & up. Language, sexual situations.

Cookie by Jacqueline Wilson; ill. Nick Sharratt (NY: Roaring Book Press, 2008).
Set in Britain. Young girl named Beauty Cookson has to deal with snarky classmates who make fun of her name and pudgy appearance. Her father's volatile temper makes home life difficult as well. Good read for girls grades 3 & up.