How are countries addressing the Covid-19 challenges in education? A snapshot of policy measuresClose to 80% of the world’s student population – 1.3 billion children and youth – is affected by school closures in 138 countries. Taken as a measure to contain the spread of the Covid-19 pandemic, some of these closures are recent, in others they have already been in place for months. In all cases, closures are placing unprecedented challenges on governments to ensure learning continuity, and on teachers, students, caregivers and parents.