Mission schools in Africa in the first half of the twentieth century were in many ways microcosms of the great educational debates of the times. The objectives of policies regarding access, governance and curriculum were part of a historical evolution of mission education but they were also increasingly a reflection of significant new trends that were to reshape the theory and practice of colonial education. New forms of educational research and professional expertise were to play an ever-increasing role in shaping the forms and content of the education provided. The brief of the mission churches was to meet with the increasing demand for schooling. Church and state gradually expanded their cooperation in the field as the costs of education outstripped the resources of the missions and the demand for mass education came to be linked to nationalist demands for political and economic rights. This paper is concerned to map the background to those international influences that shaped the policy and practices of mission education and the increasing engagement of colonial governments with the field of education. It addresses the question of the worldwide Protestant mission church's response to the changing political, social and economic environment of the first half of the twentieth century. In particular it seeks to explore how mission initiatives shaped thinking about education in Asia, Africa, Oceania and Latin America by the 1930s. It also attempts to situate those issues within a wider educational framework by linking them to the emergent debate concerning pragmatism and utilitarianism in regard to progressive education in the USA and the quest for social democratic education in the United Kingdom and Europe as part of a response to socialism, nationalism and totalitarianism. In short, the paper explores the influence of the Christian mission churches with regard to social policy, in general, and the provision of education, in particular, during the interwar years, with special reference to areas influenced by the work of the International Missionary Council. At a time when there was a crisis of support for 'foreign missions' how did the debates between fundamentalist-evangelicals and supporters of a 'social gospel' transform themselves into debates regarding the role of missions in non-Western societies? And how did these essentially ecclesiastical/theological issues come to influence public policy, specifically educational policy, in the long term? The conclusions are that mission churches had a very significant influence on the shaping of educational thinking in the colonial and imperial context at a time when state influence in the sector was still often quite weak. The origins of the conference and research culture that has informed educational policy since the establishment of the United Nations Organization had its roots in the broad context of the Charter of the League of Nations, with a meeting of religious and secular goals, prior to the outbreak of the Second World War. Between 1910 and 1939 there was a significant history of educational reform and community development that has only been partially documented in relation to its global significance. This is an attempt to build a framework for understanding the nature of those changes and what was achieved. The investigation is conducted through an exploration of the three great World Mission Conferences of the International Missionary Council (IMC) held at Edinburgh (1910), Jerusalem (1928) and Tambaram, India (1938). The attempts of Christian churches to engage with dramaticsocial changes associated with industrialisation, urbanisation, poverty, cultural change and the rise of anti-colonialism, with specific regard to the field of educational policy, are documented and analysed.