CRC/C/HND/CO/3 page 6 Training on and dissemination of the Convention 23. The Committee notes that, despite the chronic lack of resources, training courses have been held for professional groups and activities organized, especially with UNICEF and civil society support, on dissemination of the Convention. However, the Committee is concerned that the level of awareness of the Convention is low, in particular among indigenous groups and in rural areas. 24. The Committee recommends that the State party strengthen its efforts to provide adequate and systematic training and/or sensitization on children’s rights for professionals working with and for children, in particular law-enforcement officials, as well as for parliamentarians, judges, lawyers, health personnel, teachers, school administrators, social workers and others as required. The Committee further recommends that the State party include human rights in general, and the rights of the child in particular, in the curricula at all levels of education, including at universities, where appropriate. 25. The Committee recommends that the State party strengthen its efforts to disseminate the Convention throughout the country and to raise public awareness about its principles and provisions, in particular among children themselves, parents, teachers and local authorities, as well as among indigenous groups and in rural areas. The State party is encouraged to continue cooperating with UNICEF in this respect. Cooperation with NGOs 26. The Committee notes with appreciation the involvement of NGOs in several relevant activities for the implementation of the Convention. 27. The Committee encourages the State party to continue, and where possible strengthen, the collaboration with NGOs, including children’s organizations, in the development and implementation of programmes and activities aimed at improving children’s rights. International cooperation 28. The Committee notes that various programmes and projects have been and are being implemented in the framework of international cooperation, including the technical assistance and cooperation of United Nations agencies and programmes. The Committee thus recommends that the State party continue to undertake measures within the framework of international cooperation, while at the same time seeking to strengthen, through it, its institutional structure for the implementation of the Convention. 2. Definition of the child (art. 1 of the Convention) 29. The Committee reiterates its concern expressed in its previous concluding observations about the use of the biological criterion of puberty to set different ages of maturity between boys and girls; namely, that childhood ends at the age of 12 for males and 14 for females, while adolescence starts at these ages and ends at 18.