1 “..., the fourth round of the Survey on National Education Responses to COVID-19 School Closures took place...”

2 “... wave of school closures related to the COVID-19 pandemic. It covers a variety of different examples...”

3 “... School Closures, administered by the UNESCO Institute for Statistics (UIS) and OECD to Ministry...”

4 “... affecting both education and health. School closures may lead to learning losses equivalent to a third to a...”