WASH in schools encourages the development of healthy behaviours for life and helps to fulfil children’s right to health and education. Despite this, among a large group of developing countries less than half of primary schools have access to safe water and just over a third have adequate sanitation. The Call to Action for WASH in Schools supports global efforts to make the vision shared by WASH in Schools partners a reality: a world where all children go to school and all schools provide a safe, healthy and comfortable environment where children grow, learn and thrive.