The research on “what works” with youth involved in the juvenile justice system has grown substantially in the last two decades. Taking account of this new research, a number of states and jurisdictions have made significant changes to their juvenile justice policies and practices. To further this pursuit, this article offers guidance that draws from the most recent research and promising practices based on the new evidence. This article focuses primarily on juvenile justice policies and practices for youth returning to their communities from out-of-home placements (e.g., secure confinement, residential placements). Topics discussed include: the reentry continuum; overarching case management; and six critical elements of juvenile reentry. Addition information and program examples are provided for each of the six elements—assessment of risk for reoffending, strengths, and needs; cognitive-behavioral interventions; family engagement; release readiness; permanency planning; and staffing and workforce competencies.