Nearly every country around the world is investing in their children and adolescents through school health and nutrition programmes. Governments recognise that these programmes are a smart investment: they improve students' health, nutrition and learning outcomes, and deliver big development gains to their communities and countries. This ground-breaking report brings together, for the first time, multiple data sources to provide a global overview of school health and nutrition policies and programmes, showing that these are a practical and affordable way to support learners' well-being and development. For example, more than 100 countries have school vaccination programmes, one in two primary schoolchildren receives school meals, and almost every country includes education for health and well-being in its curriculum