League of Strays — L.B. Schulman

This suspenseful debut follows a group of teenage misfits in their delicious quest for revenge on those who have wronged them at their high school. When a mysterious note appears in Charlotte's mailbox inviting her to join the League of Strays, she's hopeful it will lead to making friends. What she discovers is a motley crew of loners and an alluring, manipulative ringleader named Kade. Kade convinces the group that they need one another both for friendship and to get back at the classmates and teachers who have betrayed them. But Kade has a bigger agenda. In addition to vandalizing their school and causing fights between other students, Kade's real intention is a dangerous plot that will threaten lives and force Charlotte to choose between her loyalty to the League and her own conscience.