When it comes to face masks in schools, there is no shortage of opinions - from those who dismiss them as a minor inconvenience to others who believe them to be harmful to mental health. And, thanks to prime minister Boris Johnson's decision yesterday to end the requirement to wear a mask in English classrooms , the myriad views that people hold are once again being aired.

Yesterday, he announced that the restrictions recently introduced in response to the Omicron Covid variant would…