This is taken from the guidance published to schools. This guidance is to be used in conjunction with the school's risk assessment and plans and can be implemented at the individual head teacher's discretion:
From 17 May, in line with Step 3 of the roadmap, there are changes to the guidance for use of face coverings in all schools.
• for pupils and students in all schools, face coverings will no longer be recommended in classrooms or communal areas.
• for staff in all schools, face coverings will no longer be recommended in classrooms.
• for staff and visitors in all schools, it is still recommended that face coverings should be worn in situations outside of classrooms where social distancing is not possible (for example, when moving around in corridors and communal areas).
As you can see, the guidance still suggests that face coverings are worn when in communal areas and when social distancing between adults, is not possible. Therefore, staff and visitors to are going to continue to wear face coverings when moving outside of classrooms - e.g. in corridors. However, as now, once seated, or static and socially distanced, the coverings can be removed.
When outside, face coverings are now not necessary, and I am pleased to tell you that - from Monday 17th May - you do not need to wear them when you enter the school grounds unless you come inside the building.