The District of Columbia (DC) Opportunity Scholarship Program (OSP) is the only federally funded program that provides vouchers to low-income families to send their children to private schools. Congress created the OSP in 2004 and reauthorized it in 2011 under the Scholarships for Opportunity and Results (SOAR) Act. As part of the 2011 SOAR Act, Congress required an independent evaluation of the OSP. This is the sixth and final report from that evaluation, describing how the OSP affected students and their parents three years after they applied to the program. Specifically, the report examines impacts on student achievement, student and parent satisfaction with schools, student and parent perceptions of school safety, and parent involvement with education. The evaluation included: (1) An initial study sample of 1,771 eligible applicants, of which 56 percent were offered scholarships; (2) Use of a nationally normed achievement assessment, as required in the SOAR Act; (3) Standard approach to estimating impacts of being offered and of using a scholarship; and (4) Impacts estimated for the whole sample and for specific student groups. [For the technical appendices, see ED594881. For the study highlights, see ED594874.]