Education systems around the world continue to grapple with the complex decisions of when and how to reopen schools for in-person learning following widespread closures due to the COVID 19 pandemic. Many countries closed schools along with other widespread restrictions as an immediate response to the increased spread of COVID-19. But school closures have had increasingly clear negative impacts on child health, education and development, family income and the overall economy.As more countries are reopening schools, lessons are emerging on what is working. These lessons are shared in this supplement linked to the Framework for Reopening Schools (see linked resources section).