This study, commissioned by The Wallace Foundation, is the first randomized controlled trial to test the effectiveness of large-scale, district-run, voluntary summer learning programs. In a series of reports, RAND researchers will describe whether such programs benefit low-income elementary students and what program features are associated with positive outcomes. The first results, presented in Ready for Fall? Near-Term Effects of Voluntary Summer Learning Programs on Low-Income Students' Learning Opportunities and Outcomes, describe the effects of the 2013 summer programs in the autumn after the programs ended. (author abstract)