A teacher wears a face shield during a lesson at an elementary school in Surprise, Arizona, U.S., on Thursday, Aug. 20, 2020. Arizona's downward trend of coronavirus cases means parts of the state could meet all three metrics the state's health and education departments set for at least a partial reopening of schools by Labor Day. Schools are not bound by the rules, and some have reopened already, the Associated Press reports. Photographer: Cheney Orr/Bloomberg
A teacher wears a face shield during a lesson at an elementary school in Surprise, Arizona, US, on August 20. Cheney Orr/Bloomberg

'I'm a teacher who's going back': the case for schools reopening