Schooled by Gordon Korman
Cap (that's short for Capricorn) was raised on a commune, homeschooled by his grandmother (a leftover hippie named Rain) and hasn't had much contact with the outside world. Then Rain has an accident and Cap--tie-dye, cornhusk sandals, long hair and all--is thrown into a public school while she recovers. The result? Classic Korman, hysterically funny with deep reflective and poignant moments mixed in. For making me laugh and making me cry, it gets an enthusiastic YAY and a "Please write more, Mr. Korman!" from me.