This report was commissioned by the three U.S. Department of Education 2010-2015 Ready to Learn Television Program (RTL) Grantees to provide an independent analysis of the research findings and lessons learned from the RTL Television Program's 2010-2015 grant cycle. The main objective of this policy brief is to summarize findings across the three RTL grantees' projects to examine the impact of the RTL Program, and provide recommendations for future support for and work in children's educational media. Three educational television production organizations--the Corporation for Public Broadcasting and Public Broadcasting Service (CPB-PBS), Window to the World Communications, Inc. (WTTW), and the Hispanic Information Telecommunications Network, Inc. (HITN)--were awarded RTL grants for the 2010-2015 funding cycle. In partnership with four external evaluators (Education Development Center, SRI International, The Michael Cohen Group, and WestEd), the grantees developed and evaluated the effectiveness of transmedia properties to aid young children's (ages 2-8) learning and development. While all projects included intensive formative research and evaluation (e.g., needs assessments, context studies, pilot testing), the focus of this brief is on the 15 efficacy/summative research studies. A critical review of these studies, complemented by interviews conducted by the policy brief writers with key personnel at each organization, inform the findings of this report. (author abstract)