Home visiting programs help support families so they can acquire the resources and skills they need to raise children who are physically, socially, and emotionally healthy. Policymakers and program administrators need evidence on “what works.” Not all evidence, however, is based on equally rigorous research. To supply federal, state, and local policymakers with the most rigorous evidence available, researchers conduct systematic reviews to determine which studies are methodologically sound and then extract and summarize the findings from them. Policymakers, program administrators, and the public can use these findings to identify home visiting models for which there is strong evidence of effectiveness.