Book excerpt: Fixing the Broken Promise of Education for All, published by the UNESCO Institute for Statistics and UNICEF, presents the latest statistical evidence from administrative records and household surveys to better identify children who are out of school and the reasons for their exclusion from education. It aims to inform the policies needed to reach these children and finally deliver the promise of Education for All. Based on a series of national and regional studies and policy analysis by leading experts, the report explains why better data and cross-sector collaboration are fundamental to the design of effective interventions to overcome the barriers facing out-of-school children and adolescents. While highlighting the way forward for system-wide policies to improve educational quality and affordability, the report also presents the information needed for targeted approaches to address the compounding effects of disadvantage faced by children caught up in armed conflict, girls, working children, children with disabilities, or members of ethnic or linguistic minorities. This report presents a roadmap to improve the data, research and policies needed to catalyse action for out-of-school children as the world embarks on a new development agenda for education.