OBJECTIVE: The primary objective of this hybrid I clinical trial of Date SMART (Date Skills to Manage Aggression in Relationships for Teens) was to reduce adolescent dating violence (ADV) among juvenile-justice involved females over 1 year. Secondary objectives were to determine if the intervention reduced sexual risk behavior and delinquency. Last, we evaluate system buy-in vis à vis mandated referrals to the program. METHODS: Participants were females, ages 14 to 18 (N = 240), involved in a family court in the Northeast United States. The Date SMART group intervention consisted of cognitive-behavioral skill building, and the knowledge-only comparison group consisted of psychoeducation regarding sexual health, ADV, mental health and substance use. RESULTS: Court mandates to intervention were common (41%). Among those with ADV exposure, Date SMART participants reported fewer acts of physical and/or sexual ADV (rate ratio, 0.57; 95% confidence interval [CI], 0.33-0.99) and cyber ADV (rate ratio, 0.75; 95% CI, 0.58-0.96) at follow-up, relative to control. There were significant reductions in the number of vaginal and/or anal sex acts reported by Date SMART participants relative to control (rate ratio, 0.81; 95% CI 0.74-0.89). In the overall sample, within group reductions in some ADV behaviors and delinquency were observed in both conditions. CONCLUSIONS: Date SMART was seamlessly integrated into the family court setting and received stakeholder buy-in. Although not superior to control as a primary prevention tool, Date SMART was effective in reducing physical and/or sexual ADV, and cyber ADV, as well as vaginal and/or anal sex acts, among females with ADV exposure over 1 year.