It Wasn't Me by Dana Allison Levy

Six middle school students lose their midwinter vacation week because someone vandalized Theo's photography display, and the other five were the the only students in the gallery when the crime was discovered. Instead of giving them all suspensions, their teacher, Ms. Lewiston, has talked the principal into holding a Justice Circle instead. And that's when Theo's nightmare really begins. His mom talks him into joining the five suspects who all claim "It Wasn't Me." He thinks he knows everything he needs to know about these five classmates: "the Nerd," "The Princess," "The Jock," "The Weirdo," and "The Screw-Up." But after a few totally unpredictable days of yoga ball soccer, spastic sock puppets, farts, deadly flesh wounds, and lots of candy, the Justice Circle six open up to each other in ways even the unorthodox Ms. Lewiston couldn't have planned. The author admits to being inspired by The Breakfast Club, but the use of restorative justice techniques to reveal her characters is totally original and surprising.