Case Studies on Leaving No One Behind

A companion volume to the Development Co-operation Report 2018

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These case studies complement the 2018 Development Co-operation Report: Joining forces to leave no one behind. Case study contributors share knowledge and lessons on what it takes to answer the pledge of the 2030 Agenda for Sustainable Development to leave no one behind through national and sub-national policies, strategies and programmes as well as international development co-operation projects, programmes and partnerships. The insights, good practices and lessons shared in these case studies were provided by diverse actors. These include official development co-operation ministries and agencies from members of the OECD and the Development Assistance Committee, international organisations, developing country governments, civil society organisations, business, and research bodies.


The case studies highlight experiences from projects and programmes in leaving no one behind and reaching the furthest behind. They are organised and presented under two broad categories:

1. Reaching and including people and places;

2. The enabling role of international co-operation: policies, partnerships and data.



Building a movement to end child marriage

Every year, 12 million girls are married before the age of 18 (UNCF, 2018[1]). Rooted in gender inequality, child marriage Child marriage is any formal marriage or informal union in which at least one of the parties is under 18 years of age. Joint general recommendation No. 31 of the Committee on the Elimination of Discrimination against Women; General comment No. 18 of the Committee on the Rights of the Child on harmful practices. is a gross human rights violation that continues to leave girls behind - especially those from poor, rural, vulnerable and disadvantaged populations. It denies girls their rights to health, education and opportunity, while undermining the achievement of half of the Sustainable Development Goals (SDGs) and holding back economies (Wodon et al., 2017[2]). Yet until recently child marriage was widely considered taboo, and there were limited efforts to tackle it.


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