Learn and Serve Colorado contracted with the Evaluation Center to provide external evaluation services beginning Fall 2006. The evaluation study encompassed the period from November 2006 to August 2007. Previous studies raised questions about the quality of the service learning occurring at sampled schools. In order to make connections between student outcomes and service learning, a measure of the quality of the service learning experience is necessary. The rubric of indicators of high-quality service learning that resulted from this study is envisioned as a tool to support Learn and Serve Colorado schools assess their programs in order to inform ongoing quality improvement.