A/HRC/31/19 populations in camps to recruit children and commit other violations, including sexual violence and human trafficking. 20. The international community, as well as countries of origin, transit and destination, should take all feasible measures to protect the rights of refugee and internally displaced children, particularly those living in areas affected by armed conflict. Increased efforts should be made, not only to identify long-term solutions that will reduce and mitigate the root causes and structural factors of displacement, but also to provide support to displaced children and ensure family reunification, keeping in mind the best interests of the child. 21. In line with other United Nations partners, the Special Representative emphasizes that a human rights-based approach, including the fundamental principles of the best interests of the child and non-discrimination, should be given primary consideration in the development of all relevant policies on children displaced by conflict. All States have a responsibility to ensure appropriate protection for displaced children and to avoid aggravating their vulnerability, through equal access to health care, education and psychosocial support, regardless of their status. The Special Representative also encourages Member States to prioritize investing in education in emergencies to support displaced children in rebuilding their lives. Failure to do so will only increase the cost of restoring a sustainable society in post-conflict situations. These messages were emphasized by the Special Representative at the informal meeting of the General Assembly to consider ways to advance a comprehensive response to the global humanitarian and refugee crisis, held on 19 November 2015. D. Attacks on schools and the right to education 22. The right to education is a fundamental human right. It is key for the development of children, but also critical for peacebuilding, economic growth and sustainable development for society as a whole. In times of conflict, infringements of the right to education in the form of targeted attacks on and obstacles to safe access to schools, threats to children and teachers and the military use of schools have a negative impact reaching beyond the education sector alone. Moreover, education is often interrupted due to a general climate of fear and insecurity or because of the displacement of school children, teachers and school personnel. Not only is there a large financial cost to rebuilding schools, repairing infrastructure, replacing equipment and training new teachers, there is a significant individual and societal cost. The loss of educational opportunities owing to war has longlasting effects on the social and economic development of a country, which in turn increases the likelihood of new cycles of violence and conflict. 23. In its resolution 70/137 on the rights of the child , the General Assembly underlined that full access to quality education was an essential precondition for achieving sustainable development and for the full realization of the right to education. In that regard, Goal 4 of the Sustainable Development Goals is to ensure inclusive and equitable quality education and promote lifelong learning opportunities for all. Inclusiveness, quality and nondiscrimination are fundamental principles that need to be systematically associated with education. When these principles are not given due consideration, education may increase social, ethnic and gender inequalities, further exacerbating divisions in society. 24. In its 2015 Education for All Global Monitoring Report, the United Nations Educational, Scientific and Cultural Organization highlighted that about 124 million children were out of school and that one third of those children lived in countries where there was or had recently been armed conflict. Furthermore, in many of those countries, net school enrolment had been below 50 per cent even prior to the start of the conflict. The devastating impact of war on the education system is all too visible in Afghanistan, the Central African Republic, Nigeria, the Syrian Arab Republic, Yemen, and in the State of 8