Primary and secondary education

Children attend a lesson in a school in Moscow, Russia, Monday, Sept. 7, 2020. Russian schools, which switched to online classes in late March when the coronavirus pandemic swept the country, have reopened this month. (AP Photo/Pavel Golovkin)

Holston View Elementary School Program Assistant Trey Arrington takes the temperature of 1st grader Cash Duty as he walks into the school with his mother, Nicolette, on Monday, Aug. 24, 2020, in Bristol, Tennessee. (David Crigger/Bristol Herald Courier via AP)

AshLee DeMarinis is shown in an undated photo provided by her sister, Jennifer Heissenbuttel. DeMarinis, a middle school teacher in eastern Missouri's Potosi School District, died Sunday, Sept. 6, 2020, after being hospitalized for three weeks with COVID-19. DeMarinis became ill last month before kids returned to class, but had been to her classroom preparing for the school year, Heissenbuttel said. (Jennifer Heissenbuttel via AP)

FILE - In this Aug. 18, 2020, file photo, a student works outside Ehrighaus dormitory on campus at the University of North Carolina in Chapel Hill, N.C. As more and more schools and businesses around the country get the OK to reopen, some college towns are moving in the opposite direction because of too much partying and too many COVID-19 infections among students. (AP Photo/Gerry Broome, File)

In this image made from video taken in August 2020, parents gather behind a police line outside a school in Tongliao in Northwestern China's Inner Mongolia region. Ethnic Mongolians, including students and parents, in China’s Inner Mongolia region are demonstrating their anger in rare public protests against a new bilingual education policy that they say is endangering the Mongolian language. (AP Photo)

FILE - In this Friday, Sept. 4, 2020 file photo, a teacher demonstrates a robot that takes the temperature of children and displays it on a screen in a kindergarten in Madrid, Spain. Pupils under 3 years-old in the Spanish capital head to kindergartens on Friday, the first in-person school activity since the country imposed a strict lockdown in mid-March due to the Covid-19 pandemic. As cases continue to go up and fuel the debate over the return to schools in parents' group messaging chats, Spanish authorities last week issued revised guidelines for the reopening. They included making mandatory masks for students of age six or older, daily body temperature checks, hand-washing at least five times per day and frequent ventilation of classrooms. But many parents say that funding is insufficient to hire more teachers and that some schools just don't have additional space. (AP Photo/Paul White, File)

Mathematics teacher Basirat Olamide Ajayi, 36, teaches online via her mobile phone from her house in Lagos, Nigeria Saturday, Aug. 15, 2020. The teacher from a Lagos public school is helping students across the country, and internationally, learn math virtually during coronavirus restrictions that have prevented most children from returning to class in Nigeria. (AP Photo/Sunday Alamba)

In this May 15, 2020 photo provided by Shannon Todecheene her mother Carol Todecheene, left, receives therapy services at her daughter's home in Tucson, Ariz. Carol Todecheene was among those severely hit with the coronavirus. (Shannon Todecheene via AP)

FILE - In this Sept. 1, 2020, file photo Jill Biden, wife of Democratic presidential candidate former Vice President Joe Biden, walks past a dry erase board in a classroom that reads "Shortlidge Welcomes Dr. Biden," as she tours the Evan G. Shortlidge Academy in Wilmington, Del. In an election year where reopening schools shuttered by the coronavirus pandemic is emerging as a flashpoint, Jill Biden is increasingly drawing on her experience in the classroom to empathize with parents struggling to cope with the shift to virtual learning. (AP Photo/Carolyn Kaster, File)