I thank my hon. Friend for raising this important issue. Reducing transmission in schools is of the utmost importance to me, and I will do everything in my power to keep schools open. We have provided guidance to settings regarding testing arrangements on their return in January.
Over 99% of eligible settings have now received a CO2 monitor, with more than 320,000 now delivered. Final deliveries will be made before the end of term. Feedback from schools suggests the monitors are a helpful tool in managing ventilation, sitting alongside the other protective measures in place to manage transmission.