In line with a rehabilitative approach to juvenile justice, policymakers and practitioners across the country have begun to embrace an approach to safety and justice that advances success for all youth, especially those that are vulnerable to justice system contact. This brief identifies several lessons learned and recommendations designed to inform current and future programming for justice-involved youth, drawing on findings from three program evaluations in New York City. The recommendations emphasize the importance of engaging stakeholders in a collaborative process when designing programs, providing staff training and opportunities for coordination, implementing effective program services, and engaging in ongoing program monitoring and evaluation to document outcomes and inform program refinements. This brief is intended for all stakeholders who serve justice-involved youth, such as justice system staff, judges, court actors, probation officers, law enforcement officers, community- and faith-based organization staff, and other local partners.