This view is also reflected in certain ILO Conventions. 9 Understood in this way, the right to TVE includes the following aspects: (a) It enables students to acquire knowledge and skills which contribute to their personal development, self-reliance and employability and enhances the productivity of their families and communities, including the State party’s economic and social development; (b) It takes account of the educational, cultural and social background of the population concerned; the skills, knowledge and levels of qualification needed in the various sectors of the economy; and occupational health, safety and welfare; (c) Provides retraining for adults whose current knowledge and skills have become obsolete owing to technological, economic, employment, social or other changes; (d) It consists of programmes which give students, especially those from developing countries, the opportunity to receive TVE in other States, with a view to the appropriate transfer and adaptation of technology; (e) It consists, in the context of the Covenant’s non-discrimination and equality provisions, of programmes which promote the TVE of women, girls, out-of-school youth, unemployed youth, the children of migrant workers, refugees, persons with disabilities and other disadvantaged groups. Article 13 (2) (c): The right to higher education 17. Higher education includes the elements of availability, accessibility, acceptability and adaptability which are common to education in all its forms at all levels. 10 18. While article 13 (2) (c) is formulated on the same lines as article 13 (2) (b), there are three differences between the two provisions. Article 13 (2) (c) does not include a reference to either education “in its different forms” or specifically to TVE. In the Committee’s opinion, these two omissions reflect only a difference of emphasis between article 13 (2) (b) and (c). If higher education is to respond to the needs of students in different social and cultural settings, it must have flexible curricula and varied delivery systems, such as distance learning; in practice, therefore, both secondary and higher education have to be available “in different forms”. As for the lack of reference in article 13 (2) (c) to technical and vocational education, given article 6 (2) of the Covenant and article 26 (1) of the Universal Declaration, TVE forms an integral component of all levels of education, including higher education. 11 9 See note 8. 10 See paragraph 6. 11 See paragraph 15.