Three US state agencies are tasked with evaluation responsibilities within development aid assistance; the US Department of State, the US Agency for International Development (USAID), and the US Millennium Challenge Corporation (US MCC).

Under the Department of State, the Office of U.S. Foreign Assistance Resources is tasked with providing technical assistance and monitoring the implementation of the Evaluation Policy by individual bureaus in the Department. According to the Policy, each bureau develops annual evaluation plans to ensure the evaluation of large programmes, pilot programmes and programmes where management has questions about progress or efficacy. It is compulsory for each bureau to conduct at least one evaluation per year.

In USAID, the Office of Learning, Evaluation and Research is a specialised office located in the Bureau of Policy, Planning and Learning. The Office is responsible for catalysing USAID’s transformation into an effective learning organisation by providing guidance, tools and technical assistance on evaluation to the Operating Units (USAID regional offices, technical offices, oversees missions etc.). Decentralised project evaluations are planned and performed by the Operating Units in the countries, whereas selected thematic and meta evaluations are planned and carried out from the central level. 

The evaluation work of the MCC is guided by a 2012 Policy on Evaluation, which integrates evaluation into the entire project cycle of a programme with a focus on measuring results as well as outcome and impact. The Department of Policy and Evaluation manages MCC’s annual country eligibility process; the development and implementation of threshold me; promotes effective policy improvement and reform; performs economic analysis and monitoring, including rigorous independent evaluations; and provides institutional leadership on interagency engagement.