A/RES/69/157 Rights of the child development programmes, for the most marginalized and excluded children, financially and technically, as well as to enhance effective international cooperation and partnerships to strengthen knowledge-sharing and capacity-building, with particular attention to policy development, programme development, research and professional training; IV Follow-up 51. Recognizes the work of the Office of the Special Representative of the Secretary-General for Children and Armed Conflict, its increased level of activity and the progress achieved since the establishment of the mandate of the Special Representative, and, bearing in mind its resolution 63/241 of 24 December 2008 and paragraphs 35 to 37 of its resolution 51/77 of 12 December 1996, recommends that the Secretary-General extend the mandate of the Special Representative for a further period of three years; 52. Decides: (a) To request the Secretary-General to submit to the General Assembly at its seventieth session a report on the rights of the child containing information on the status of the Convention on the Rights of the Child and the issues addressed in the present resolution, with a focus on the right to education; (b) To request the Special Representative of the Secretary-General for Children and Armed Conflict to continue to submit reports to the General Assembly and the Human Rights Council on the activities undertaken in the fulfilment of her mandate, including information on her field visits and on the progress achieved and the challenges remaining on the children and armed conflict agenda; (c) To request the Special Representative of the Secretary-General on Violence against Children to continue to submit annual reports to the General Assembly and the Human Rights Council on the activities undertaken in the fulfilment of her mandate, consistent with paragraphs 58 and 59 of its resolution 62/141, including information on her field visits and on the progress achieved and the challenges remaining on the violence against children agenda, and, in accordance with paragraph 39 of its resolution 68/147, to ensure that the effective performance and the sustainability of the core activities of the mandate of the Special Representative are maintained; (d) To invite the Secretary-General to commission an in-depth global study on children deprived of liberty, funded through voluntary contributions and conducted in close cooperation with relevant United Nations agencies and offices, including but not limited to the United Nations Office on Drugs and Crime, the Office of the United Nations High Commissioner for Human Rights, the United Nations Children’s Fund, the Office of the Special Representative of the SecretaryGeneral for Children and Armed Conflict and the Office of the Special Representative of the Secretary-General on Violence against Children, as well as the Interagency Panel on Juvenile Justice, and in consultation with relevant stakeholders, including Member States, civil society, academia and children, and to include good practices and recommendations for action to effectively realize all relevant rights of the child, including supporting the implementation of the United Nations Model Strategies and Practical Measures on the Elimination of Violence against Children in the Field of Crime Prevention and Criminal Justice, and invites 14/15