School closure and management practices during coronavirus outbreaks including COVID-19: a rapid systematic review:
https://www.thelancet.com/journals/lanchi/article/PIIS2352-4642(20)30095-X/fulltext
Summary from BBC News:
- While school closures help during influenza outbreaks, the same may not apply to coronavirus
- Data from the Sars outbreak (in mainland China, Hong Kong, and Singapore) suggest that school closures did not contribute to the control of the epidemic
- Recent modelling studies of Covid-19 predict that school closures alone would prevent only 2%-4% of deaths, many fewer than other social distancing interventions