Source: (2005) Youth Violence and Juvenile Justice. 3(2):99-115.This study examines differences between juvenile gang and nongang members participating in a juvenile probation program designed to identify and intervene with youth considered to be high risk for subsequent criminal and delinquent activity. After participating in the Multidisciplinary Team Program, both gang and nongang members significantly improved their grade point average, lowered the number of classes missed, and reduced the number of suspensions. Both groups also improved on family functioning and a decrease in reported alcohol and substance abuse. There were also improvements for gang and nongang members concerning subsequent delinquent activity. The results suggest that at some levels, gang affiliation is not an impediment to treatment programming. A limitation to the study was that gang membership was based on self-report and law enforcement identification, which results in false positive and false negative designations. Additionally, the nongang group may have included youths who escaped being identified as gang members.