This guidance aims to improve the availability, quality, and comparability of statistics on children. It provides information about the data sources, definitions, standards, and methods used in the collection of data and production of statistics on children and youth in countries participating in the Conference of European Statisticians. Focus is on three policy-relevant areas with methodological gaps: violence against children, children in alternative care, and children with disabilities. The Guidance includes recommendations to national statistical offices and suggests further work that could be undertaken at the international level for improving statistics on children