The Juvie Three by Gordon Korman

Gecko drove the getaway car.
Terance ran with the worst gang in Chicago.
Arjay killed someone.
All three of these boys are serving time in different detention centers until they get a second chance. Douglas Healy, a former juvenile delinquent himself, gets a federal grant to run an experimental halfway house in New York City where he hopes to make a difference in these three lives. Things are going well until one night Healy is accidentally knocked unconscious while breaking up a scuffle between the boys. Terrified of the consequences, the three boys drop him off at the hospital and run away. Healy awakens and has no memory of them or the halfway house project. Afraid of being sent back to their original detention centers, the three boys scheme to continue on as if Healy were still there. They will go to school, do their community service, attend group therapy seessions, and act like model citizens until Healy's memory returns and he can resume his role as group leader. The book is funny and the teens seems real to life. It was an enjoyable book to read and one that boys should enjoy reading.