EDC Principal Research Scientist Leslie Goodyear is one of 13 experts who, as members of the Committee on Successful Out-of-School STEM Learning appointed by the National Research Council's Board on Education, contributed to this new report released on June 25, 2015. The Committee on Successful Out-of-School STEM Learning was charged with outlining the criteria that policy makers, program developers, and other stakeholders can use to identify effective out-of-school STEM settings and programs. The Committee was also charged with identifying those criteria for which data are readily available and those for which further work is needed to develop appropriate data sources. To address its charge, the committee organized a National Summit on Successful Out-of-School STEM Learning, reviewed relevant research, and commissioned papers to synthesize existing research. This report presents the findings from that work.