Many countries are now requiring secondary school and university students to wear masks. Some sixth forms are saying students will be one week on - one week off.
Many workplaces are required to wear masks.
Any places where we are inside for any length of time with other people other than our home are going to be a risk - it is just trying to work out what is most effective. It is a bit crazy to insist everyone on public transport wears a mask or going into shops for 20 minutes and yet students all day inside will not. However like everything there is a balance.
Personally I would be in favour of a hybrid of school / online teaching and shorter days. I would also massively be in favour of very, very good test and trace and localised Plan A and B with schools being able to have less restrictions if community transmission is very low.
So I think we either blanket have many restrictions in schools or we are flexible, go in between mask wearing and hybrid days to being able to be more ‘normal’ depending on the local rates of transmission.