E/C.12/1999/10 page 8 Article 13: Special topics of broad application Non-discrimination and equal treatment 31. The prohibition against discrimination enshrined in article 2 (2) of the Covenant is subject to neither progressive realization nor the availability of resources; it applies fully and immediately to all aspects of education and encompasses all internationally prohibited grounds of discrimination. The Committee interprets articles 2 (2) and 3 in the light of the UNESCO Convention against Discrimination in Education, the relevant provisions of the Convention on the Elimination of All Forms of Discrimination against Women, the International Convention on the Elimination of All Forms of Racial Discrimination, the Convention on the Rights of the Child and the ILO Indigenous and Tribal Peoples Convention, 1989 (Convention No. 169), and wishes to draw particular attention to the following issues. 32. The adoption of temporary special measures intended to bring about de facto equality for men and women and for disadvantaged groups is not a violation of the right to non-discrimination with regard to education, so long as such measures do not lead to the maintenance of unequal or separate standards for different groups, and provided they are not continued after the objectives for which they were taken have been achieved. 33. In some circumstances, separate educational systems or institutions for groups defined by the categories in article 2 (2) shall be deemed not to constitute a breach of the Covenant. In this regard, the Committee affirms article 2 of the UNESCO Convention against Discrimination in Education (1960).15 34. The Committee takes note of article 2 of the Convention on the Rights of the Child and article 3 (e) of the UNESCO Convention against Discrimination in Education and confirms that the principle of non-discrimination extends to all persons of school age residing in the territory of a State party, including non-nationals, and irrespective of their legal status. 35. Sharp disparities in spending policies that result in differing qualities of education for persons residing in different geographic locations may constitute discrimination under the Covenant. 36. The Committee affirms paragraph 35 of its General Comment 5, which addresses the issue of persons with disabilities in the context of the right to education, and paragraphs 36-42 of its General Comment 6, which address the issue of older persons in relation to articles 13-15 of the Covenant. 37. States parties must closely monitor education - including all relevant policies, institutions, programmes, spending patterns and other practices - so as to identify and take measures to redress any de facto discrimination. Educational data should be disaggregated by the prohibited grounds of discrimination.