As early as 1942, in wartime, the governments of the European countries, which were confronting Nazi Germany and its allies, met in the United Kingdom for the Conference of Allied Ministers of Education (CAME). The Second World War was far from over, yet those countries were looking for ways and means to reconstruct their systems of education once peace was restored. Very quickly, the project gained momentum and soon took on a universal note. New governments, including that of the United States, decided to join in.

Upon the proposal of CAME, a United Nations Conference for the establishment of an educational and cultural organization (ECO/CONF) was convened in London from 1 to 16 November 1945. Scarcely had the war ended when the conference opened. It gathered together the representatives of forty-four countries who decided to create an organization that would embody a genuine culture of peace. In their eyes, the new organization must establish the “intellectual and moral solidarity of mankind” and, in so doing, prevent the outbreak of another world war. 

At the end of the conference, thirty-seven countries founded the United Nations Educational, Scientific and Cultural Organization. The Constitution of UNESCO, signed on 16 November 1945, came into force on 4 November 1946 after ratification by twenty countries: Australia, Brazil, Canada, China, Czechoslovakia, Denmark, Dominican Republic, Egypt, France, Greece, India, Lebanon, Mexico, New Zealand, Norway, Saudi Arabia, South Africa, Turkey, United Kingdom and United States. The first session of the General Conference of UNESCO was held in Paris from 19 November to 10 December 1946 with the participation of representatives from 30 governments entitled to vote.

The political divisions of the Second World War marked the composition of the founding Member States of UNESCO. It was not until 1951 that Japan and the Federal Republic of Germany became Members, and Spain was accepted in 1953. Other major historical factors, such as the Cold War, the decolonization process and the dissolution of the USSR, also left their trace on UNESCO. The USSR joined UNESCO in 1954 and was replaced by the Russian Federation in 1992 alongside 12 former Soviet republics. Nineteen African states became Members in the 1960s.

As a consequence of its entry into the United Nations, the People's Republic of China has been the only legitimate representative of China at UNESCO since 1971. The German Democratic Republic was a Member from 1972 to 1990, when it joined the Federal Republic of Germany.

Some countries withdrew from the Organization for political reasons at various points in time, but they have today all rejoined UNESCO. South Africa was absent from 1957 to 1994, the United States of America between 1985 to 2003, the United Kingdom of Great Britain and Northern Ireland from 1986 to 1997 and Singapore from 1986 to 2007.  

Origins of UNESCO

The main predecessors of UNESCO were:

•    The International Committee of Intellectual Co-operation (CICI), Geneva 1922-1946, and its executing agency, the International Institute of Intellectual Co-operation (IICI), Paris, 1925-1946;

•    The International Bureau of Education (IBE), Geneva, 1925-1968; since 1969 IBE has been part of the UNESCO Secretariat under its own statutes.