The well-being of children is high on the policy agenda across the OECD. But what is the actual state of child well-being today? How much are governments spending on children and are they spending it at the right times? What social and family policies have the most impact during children's earliest years? Is growing up in a single-parent household detrimental to children? Is inequality that persists across generations a threat to child well-being? This publication addresses these questions and more. Drawing on a wide range of data sources, it constructs and analyses different indicators of child well-being across the OECD. These indicators cover six key areas: material well-being; housing and environment; education; health and safety; risk behaviours; and quality of school life. They show that no one OECD country performs well in all areas and that every OECD country can do more to improve children's lives. (DIPF/Orig.).