Caution tape blocks a hallway area inside Marietta High School in Marietta, Ga, July 7, 2020. Many of the nation’s 3.5 million teachers found themselves feeling under siege this week as pressure from the White House, paediatricians and some parents to get back to physical classrooms intensified — even as the coronavirus rages across much of the country. (Audra Melton/The New York Times)

US teachers feel pressure to return to class

Questions about cleanliness, physical distancing in schools have not been answered, they say