Schools and settings should ensure that there is an adequate level of ventilation, and Welsh Government has given operational guidance to schools in that regard. In terms of the implications of the firebreak for education, I have been very clear since this summer that the best way in which we can minimise disruption to our children's education is to keep community levels of transmission of COVID-19 as low as possible. As a Government, we recognise a firebreak is essential if we are to reduce levels of transmission and reduce the R rate. I appreciate that for those parents and learners in year 9 and above, this is an extremely difficult time, but these year groups have the ability to undertake self-directed learning more easily than other parts of the cohort, and they will be supported in doing so for the week by their teachers, who will be in the classroom.