This report presents findings from a process evaluation of two summer programs for young people in New York City: Playstreets and VIBE (Vibrant Interactions by Engagement). Playstreets is a drop-in summer program for 5-to-14-year-olds that has recently added more structure to its programming model. VIBE, focused on 14-to-24-year-olds, is based around production and presentation of art and community-based projects for participants. The evaluation identified strategies to better measure implementation and programmatic inputs and outputs and developed a New York City–specific play-based programming strategy to reduce crime and victimization for high-risk youth and their communities. Using interviews with stakeholders, staff, and participants; site observations; and review of other materials, this project built a collaborative and iterative approach that brought stakeholders into the research process, from logic model creation, to data collection protocol development, to review of initial findings.