This Report Card offers an assessment of child well-being in the context of sustainable development across 41 countries of the European Union (EU) and the Organisation for Economic Co-operation and Development (OECD). Specifically, this report seeks to bring the SDG [Sustainable Development Goal] targets for children in high-income countries into meaningful operation (while staying true to the ambitions of the global agenda) and to establish a point of departure for reviewing the SDG framework in these contexts. It focuses on those goals and targets with most direct relevance to the well-being of children in high-income settings. Where appropriate, it adapts the agreed SDG indicator, the better to reflect the problems facing children in such countries. The results therefore highlight the new challenges set by the SDGs.