This was already the case for those in areas who fell under Tier 2 and Tier 3 coronavirus restrictions.
In new guidance, the government said students and adults must wear face masks when moving around schools where pupils aged Year 7 and above are taught.
In this case, face coverings must be worn “outside of classrooms, such as in corridors and communal areas where social distancing cannot easily be maintained”.
The new rules were set out in guidance published by the Department for Education on Wednesday – the day before England’s second lockdown was due to come into force.
Speaking about the changes, Geoff Barton from the Association for School and College Leaders (ASCL) said: “This extension to the rule on face coverings is a sensible response to rising Covid levels, and will act as an extra level of protection on top of the other safety measures in schools.”
The union’s general secretary added: “It is vital that this requirement is respected by all parents and pupils.”
The changes for England are covered in guidance over new lockdown measures and educational settings, which also says staff who are clinically vulnerable “are advised to work from home and not to go into work”.
The government has said schools, colleges and universities must remain open during England’s new lockdown, which will start on Thursday and run until the start of December.