Demonstration grant programs provide a critical opportunity for practitioners and evaluators to explore what works and why in education, workforce development and other areas of social policy. However, the rigorous evaluations required for such programs take time to complete, and over the course of the evaluation, public policies can shift dramatically, placing the results in a different context than originally envisioned. In this Evaluation 2017 panel, presenters shared findings from two random assignment impact studies of workforce system programs that were funded by the U.S. Department of Labor’s (US DOL) Round One Workforce Innovation Fund (WIF) grants. The evaluators presented on key findings and shared their experiences contextualizing these findings given the Workforce Innovation and Opportunity Act (WIOA), which was enacted during the study period, creating new relevance and new audiences for evaluation findings.