Social Return on Investment (SROI) is a methodology used to understand and assess the value of the social, economic and environmental outcomes created by an activity or an organization. SROI is centered on beneficiary engagement where project stakeholders identify outcomes and the relative values of those outcomes. International development programs often struggle to understand the value of their work to those the serve and donors are increasingly asking for evidence of this value through various cost-effectiveness measures. In 2015, Pact began piloting SROI across four projects in different international development impact areas: health, peacebuilding, livelihoods, and civil society strengthening. Varying in scope and scale, each panelist presented their experience utilizing the SROI methodology in an international development context, including why they chose SROI as the evaluation methodology, how they implemented the study, successes experienced, challenges encountered, lessons learned, and the key findings. Eval16 Conference 2016#Evaluation2016 #Eval16 #AEA2016Conference