RecruitingBehavioural interventionParent SMART (Substance Misuse in Adolescents in Residential Treatment)Adolescents in residential substance use treatment have serious substance-related problems and poor outcomes following discharge: follow-up studies indicate that 60% of adolescents treated in residential treatment will relapse within the first 90 days. Parenting practices have been established as a critical predictor of adolescents' substance use outcomes and likelihood of relapse following treatments, but parents are notoriously difficult to engage in adolescent substance use treatment. Findings such as these provide strong justification for targeting parents of adolescents in residential substance use treatment via easily accessible interventions. This study tests the effectiveness of a technology-assisted parenting intervention called Parent SMART (Substance Misuse among Adolescents in Residential Treatment). The intervention combines an off-the-shelf computer program that teaches parenting skills called Parenting Wisely, four telehealth coaching sessions, and a networking forum that allows parents to connect with a clinical expert and with other parents. The investigators will compare adolescents who receive standard residential substance use treatment to adolescents who receive the same treatment plus whose parents receive Parent SMART. Investigators will test the comparative effectiveness of Parent SMART versus residential treatment as usual on parental monitoring and communication, adolescent substance use (i.e., days of substance use and substance-related problems), and substance-related high-risk behaviors (i.e., school-related problems, criminal involvement, externalizing behavior). The investigators will also test whether improvements in parenting partially mediate any observed changes in adolescent substance use and other high-risk behaviors.