Sulley is an evaluation and governance specialist and former diplomat, with over 35 years of experience advising government and non-governmental institutions. Most recently, Sulley served as Ghana’s High Commissioner to Canada from 2014 to 2017, and Senior Policy Advisor to the President of Ghana, where he established the Policy Delivery and Evaluation Unit in the Presidency of Ghana from 2010 to 2014. In the field of evaluation, knowledge management and learning, Sulley is a leader in the international evaluation movement. He was founding President of the International Development Evaluation Association (IDEAS) and President of the African Evaluation Association. He advised the first round of the Evaluation of the Paris Declaration; was team leader for the Review of UNDP’s Evaluation Policy; led the evaluation of UNDP’s HIV and AIDS programs in 11 African countries; and designed and delivered training on citizen-based tools for evaluating poverty to over a dozen African Parliaments. More recently, Sulley has led research, learning, and training initiatives on Evaluating Collective Action Movements in Africa, using the results to train five youth-led collective action movements across Africa. This work is influencing the reconsideration of youth-led forces demanding accountability for public policies in Africa, and using evaluative tools to assess knowledge, attitudes, and practices. He was on the Board of the International Initiative on Impact Evaluation (3ie), a member of the Evaluation Advisory Panel of AGRA, and on the Technical Advisory Panel of the UNICEF Evaluation Office. He established the Institute for Policy Alternatives, a policy think tank and research organization based in Ghana.