Accelerating Promising Practices for Small Libraries (APP) was a pilot initiative, launched in 2018, by the National Leadership Grants for Libraries Program. The goal of this pilot was to support projects that strengthen the ability of small and/or rural libraries and archives to serve their communities and to build grantee capacity through participation in a mentor-led community of practice. At the same time, IMLS hired the TCC Group – a third-party evaluator – to conduct an independent evaluation of the project so that IMLS can apply lessons learned from the pilot to future small and rural library efforts. The evaluation, completed in March 2023, outlines its findings from the effort.