The article deals with the realization of the right to education, the protection of children's rights and non-discrimination in the field of educational relations in the context of international law. The research provides an analysis and the chronology of securing of the right to education in international law. An important role in the international legal regulation of the right to education belongs to the block of international conventions aimed at preventing discrimination, including in education. The Universal Declaration of Human Rights of 1948, the Declaration of Rights of the Child of 1959, the Convention against Discrimination in Education of 1960 laid the foundation for international legal regulation of the right to education in the field of human rights, children's rights and combating discrimination. Securing the right to education in international law begins in the middle of the XX century. Currently, the implementation of the right to education, the protection of children's rights and non-discrimination in the field of educational relations is widely regulated by international law. All this ensures the embodiment of these positive provisions in the national legislation of most countries.