1. The document discusses using administrative data from social programs for program evaluations. It provides examples from Chile Solidario, a conditional cash transfer program in Chile. 2. Regression discontinuity designs were used to evaluate Chile Solidario's impacts on outcomes like take-up of social services, employment, and poverty. Impacts generally persisted over time but depended on initial conditions and access to complementary social services. 3. The quality of social workers implementing Chile Solidario was also found to impact participation and employment outcomes, highlighting the importance of implementation quality.