The proposed study evaluates the effectiveness of a family-based psychosocial treatment program for teens with ADHD (Supporting Teens' Academic Needs Daily; STAND) developed to be delivered in community settings. STAND is BT enhanced by Motivational Interviewing (MI) that was developed (R34 MH092466) for teens with ADHD through a stakeholder informed process. STAND consists of ten 50-minute sessions delivered by therapists with community-typical levels of training and supervision. Across randomized controlled pilot (N=28; N=36) and efficacy trials (N=128), STAND demonstrates medium to large effects on ADHD and ODD symptoms and indices of academic and family impairment. In the proposed study, 240 adolescents with ADHD who present for treatment at one of four community mental health agencies in Miami-Dade County, FL will be randomly assigned to STAND or agency usual care (UC). Participating agency therapists also will be randomly assigned to deliver STAND or UC. STAND therapists will receive a comprehensive treatment manual, three-day training, and weekly supervision from a project psychologist. Participants will be screened by research staff in the community setting and enrolled on a rolling basis over 30 months. Participants will be assessed at baseline, post-treatment, and three-month follow-up. In line with RDoC, multi-method measures will be obtained for treatment outcome (family and academic impairment), treatment mediators (executive functioning, parent academic involvement, parent-teen communication, parent/adolescent motivation, ADHD symptoms), and moderators of effectiveness (patient, practitioner, service delivery, and organization characteristics). Additional consumer perspective (satisfaction, therapeutic alliance) and agency fit (therapist competence, treatment fidelity, need for additional treatment, attendance, therapist attitude toward treatment, cost effectiveness) measures will also be obtained to evaluate effectiveness. We will recruit an ethnically diverse sample (65% Hispanic, 19% African-American, 16% Non-Hispanic White) that is historically underrepresented in research, but ideal for evaluating therapy effectiveness.