The United Nations Children's Fund has rapidly gained prominence as a UN agency promoting educational development. Detailed analysis is presented of UNICEF's transition from being a supplier of emergency goods and services, to a humanitarian role that has diversified to embrace development assistance and promoting the rights of children and women. How these have impacted on the development of UNICEF education is examined. Despite many institutional strengths, it is argued that the need for increased policy clarity in UNICEF education and for greater operational effectiveness remain central to any contemporary understanding of UNICEF's contribution to educational development.