UNESCO, a body integrated to the Organization of the United Nations (ONU), was set up in 1946 to promote world peace through culture, communication, education, natural sciences and social sciences. UNESCO main decisive organ is its General Assembly, made up by representatives of 181 member States. The General Assembly elects members of the executive committee and appoints the general director. The executive committee is made up by representatives of 51 member States and gathers twice a year, in between the meetings held by the general assembly, to supervise the implementation of UNESCO biannual policies. These policies are implemented by the Secretariat, headed by the general director. Mexico and Dominican Republic are the first Latin-American countries to form part of UNESCO and signed the constitution deed in 1946. The first general conference was held in Paris, but the second one took place in Mexico, November 1947. UNESCO’s first general director was the British biologist Julian Sorell Huxley (1946-1948).UNESCO’s main priorities are to provide education for all, to establish a culture of peace through education, to promote free circulation of information among countries and freedom of the press and to protect the natural and cultural heritage and thus defend the expression of cultural identities.The prioritized topics are education, development, urbanization, population, youth, human rights, women equality, democracy and peace. UNESCO’s policies referring to society and social sciences give priorities to the problems of the youth which are the first victims of unemployment, economic and social inequalities and those of the increasing gap among the developing countries and developed countries, but the second one took place in Mexico, November 1947. UNESCO’s first general director was the British biologist Julian Sorell Huxley (1946-1948).UNESCO’s main priorities are to provide education for all, to establish a culture of peace through education, to promote free circulation of information among countries and freedom of the press and to protect the natural and cultural heritage and thus defend the expression of cultural identities.The prioritized topics are education, development, urbanization, population, youth, human rights, women equality, democracy and peace. UNESCO’s policies of society and social sciences give priorities to the problems of the youth which are the first victims of unemployment, economic and social unequalities and that of increasing gap among the developing countries and developed countries.