Based on Phase I findings and 3C's experience developing similar products, the investigators expect high user ratings on the relapse prevention program, and anticipate greater improvement in outcomes across all areas for adolescents who received access to the relapse prevention program (Group A) compared with those who did not (Group B), providing evidence for the promise of this new educational program for generating beneficial substance use abstinence outcomes. The investigators do not expect participation in the program to be associated with any negative outcomes. The investigators expect Phase II findings to demonstrate greater sobriety maintenance for adolescents with access to the relapse prevention program compared to those in typical aftercare activities.