The Win-Win project aims to identify policies and programs in and outside the public health sector that are likely to have:

• 1. A large effect on social and economic outcomes, and;
• 2. Net positive financial benefits to local and state governments

We conducted systematic literature searches to identify more than 1,100 studies of social and public health programs and policies. Of these, we narrowed the list to several dozen based on the returns timeframe, number and significance of effect sizes, and probability of positive returns. Finally, we identified promising interventions that represent a diversity of sectors and serve a variety of populations. We model the interventions to determine their long-term impact on education, length and quality of life, rates of violent crime and other outcomes. We also determine the cost and net program returns associated with implementing the program from year one onward.