Dr Amanda Kvalsvig, Dr Julie Bennett, Dr Jin Russell, Dr Jennifer Summers, Dr Leah Grout, Prof Michael Baker, and Prof Nick Wilson*
As much of the country moves down Alert Levels, children are returning to in-person learning with little or no protection against the potential spread of Covid-19 infection in schools. It is therefore critical that ventilation is improved in schools; it is often as easy as opening windows, but ultimately new standards and improved resourcing are required. Ventilation is a valuable protection that works well in combination with other pandemic control measures such as vaccination and mask use, with additional benefits for improving children’s learning and concentration.