OST programs must be high-quality to actualize youth outcomes. This raises questions. How do I know the program is high-quality? How do I know we are making an impact on youth? This can be answered through evaluation: the process of gathering information to promote learning. In this workshop, the presenters will provide an overview of how to prepare for an evaluation (build staff capacity), collect/analyze data (behavior rating scale, observation, survey), and use data for learning (dashboard).