Inclusion is rooted in the right to education as enshrined in Article 26 of the 1948 Universal Declaration of Human Rights. A number of treaties and normative instruments have since reaffirmed this right. Three deserve specific mention. UNESCO’s 1960 Convention against Discrimination in Education stipulates that States have the obligation to expand educational opportunities for all who remain deprived of primary education. The 1966 International Covenant on Economic, Social and Cultural Rights reaffirms the right to education for all and highlights the principle of free compulsory education.