In response to COVID-19, countries around the world have implemented several public health and social measures (PHSM), such as movement restrictions, closure of schools and businesses. As the local epidemiology of the disease changes, countries will adjust these measures according to the intensity of transmission. WHO has issued guidance on adjusting PHSM while managing the risk of resurgence of cases. This annex provides considerations for decision-makers and educators on how or when to reopen or close schools in the context of COVID-19.