Presents the uses, benefits, and practical applications for a logic model as a method for presenting the design of Out-Of-School Time (OST) programs in order to assess progress. A logic model uses one sheet of paper to summarize a program’s key elements, approach rationale, desired outcomes and measurements, and cause-and-effects relationships between a program and its intended outcomes. The left side of the model describes the 4 program elements that describe the OST program: (1) desired results, (2) motivating conditions and causes, (3) strategies, and (4) activities. The right side of the model lists the OST program’s outcomes, performance measures, and indicators. An additional element, evaluation and learning, can be added to assess progress and plan improvements. A guide to terms and definitions, a glossary, an example, and a model worksheet are provided.