Harvard Family Research Project's series of "Out-of-School Time Evaluation Snapshots" distills the wealth of information compiled in the Out-of-School Time (OST) Program Evaluation Database into a single report. Each "Snapshot" examines a specific aspect of out-of-school time evaluation. This "Snapshot" describes instruments used by current OST programs to evaluate their implementation and outcomes. As part of Harvard Family Research Project's continuing effort to help practitioners and evaluators choose appropriate evaluation methods, this "Snapshot" describes instruments and tools that can be obtained and used for on-the-ground program evaluation. From first-time internal evaluations to large-scale national studies, these evaluation instruments provide valuable ways to assess the characteristics of programs, their staff, their participants, and other key information.