Ending extreme poverty and building shared prosperity requires evidence to identify those programs and policies that will have a real impact. The World Bank’s Strategic Impact Evaluation Fund (SIEF) makes this happen by investing in impact evaluations of innovative human development programs in low-and middle income countries, and by working directly with policymakers and other key stakeholders to use the results and build better policies and programs that successfully improve people’s lives. 

SIEF is a multi-donor trust fund created in 2012 with the support of the British government’s Department for International Development (DFID) and currently also receives support from the Children’s Investment Fund Foundation (CIFF). SIEF focuses on four human development areas that are crucial to improving the lives of the world’s poorest and most vulnerable: Early Childhood Development and Nutrition, Basic Education, Health Systems and Service Delivery, and Water Supply, Sanitation, and Hygiene.