Signage displayed on the front entrance at E. Rivers Elementary School indicate that students will go remote to prevent the spread of coronavirus disease (COVID-19) as cases of the Omicron variant continue to surge in Atlanta, Georgia, U.S., January 3, 2022.

Students wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, participates in an annual New Year calligraphy contest, after last year's was cancelled due to the pandemic, in Tokyo, Japan, January 5, 2022.

Students leave a school after returning to in-person classes after the holiday break, as the coronavirus disease (COVID-19) pandemic continues in Mexico City, Mexico January 3, 2022.

A teacher lays out exams at The Fulham Boys School on the first day after the Christmas holidays following a government announcement that face masks are to be worn in English secondary schools amid the coronavirus disease (COVID-19) outbreak in London, Britain, January 4, 2022.

An empty playground is pictured behind a locked gate outside a closed school after the city of Newark ordered students to return to remote instruction due to the spread of coronavirus disease (COVID-19) in Newark, New Jersey, U.S., January 4, 2022.

A child wearing a face mask arrives at school in a bus, during the coronavirus disease (COVID-19) pandemic, in the Manhattan borough of New York City, New York, U.S., January 5, 2022.

A child arrives at Bronx Elementary School 385, during the coronavirus disease (COVID-19) pandemic in the Bronx borough of New York City, New York, U.S., January 3, 2022.

Signage outside of E. Rivers Elementary School encourages parents to seek COVID-19 testing as students will go remote to prevent the spread of coronavirus disease (COVID-19) as cases of the Omicron variant continue to surge in Atlanta, Georgia, U.S., January 3, 2022.

Students leave a school after returning to in-person classes after the holiday break, as the coronavirus disease (COVID-19) pandemic continues, in Mexico City, Mexico January 3, 2022.

A girl takes a COVID-19 lateral flow self test ahead of returning to school, amid the coronavirus disease (COVID-19) outbreak in Manchester, Britain, January 4, 2022.

Pupils work in a classroom at The Fulham Boys School on the first day after the Christmas holidays following a government announcement that face masks are to be worn in English secondary schools amid the coronavirus disease (COVID-19) outbreak in London, Britain, January 4, 2022. Image used for illustrative purpose.

Pupils at The Fulham Boys School take a mock exam on the first day after the Christmas holidays following a government announcement that face masks are to be worn in English secondary schools amid the coronavirus disease (COVID-19) outbreak in London, Britain, January 4, 2022.

A woman wearing a protective face mask walks past an empty closed school after the city of Newark ordered students to return to remote instruction due to the spread of coronavirus disease (COVID-19) in Newark, New Jersey, U.S., January 4, 2022.

Students wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, participates in an annual New Year calligraphy contest, after last year's was cancelled due to the pandemic, in Tokyo, Japan, January 5, 2022.

A child wearing a face mask arrives at school, during the coronavirus disease (COVID-19) pandemic, in the Manhattan borough of New York City, New York, U.S., January 5, 2022.

A child wearing a face mask arrives at school, during the coronavirus disease (COVID-19) pandemic, in the Manhattan borough of New York City, New York, U.S., January 5, 2022.

A child wearing a face mask arrives at school, during the coronavirus disease (COVID-19) pandemic, in the Manhattan borough of New York City, New York, U.S., January 5, 2022.

Children wearing face masks arrive at school, during the coronavirus disease (COVID-19) pandemic, in the Manhattan borough of New York City, New York, U.S., January 5, 2022.

A gate is pictured locked outside a closed school after the city of Newark ordered students to return to remote instruction due to the spread of coronavirus disease (COVID-19) in Newark, New Jersey, U.S., January 4, 2022.

A sign is pictured on a locked gate outside a closed school after the city of Newark ordered students to return to remote instruction due to the spread of coronavirus disease (COVID-19) in Newark, New Jersey, U.S., January 4, 2022.