A schoolchild participates in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

A schoolchild washes his hands before participating in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

Schoolchildren participate in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

A schoolchild participates in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

Schoolchildren participate in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

Schoolchildren participate in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

A schoolchild participates in a lesson at the newly reopened Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

A schoolchild participates in a lesson at Gustav-Falke elementary school, after it reopened according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

A message which reads "Welcome back" is seen on a schoolchild's desk during a lesson at Gustav-Falke elementary school, according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

Schoolchildren participate in a lesson at Gustav-Falke elementary school, according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

Schoolchildren participate in a lesson at Gustav-Falke elementary school, according to first measures to lift the coronavirus disease (COVID-19) lockdown in Berlin, Germany, February 22, 2021. REUTERS/Annegret Hilse

A schoolchild of Gustav-Falke elementary school follows their lesson on a laptop during classess for children of critical workers, amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

Schoolchildren of Gustav-Falke elementary school participate in a lesson with their teacher seen on a screen during classes for children of critical workers amid coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

A schoolchild of Gustav-Falke elementary school follows their lesson on a laptop during classess for children of critical workers, amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

A schoolchild of Gustav-Falke elementary school follows their lesson on a laptop during classess for children of critical workers, amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

Schoolchildren of Gustav-Falke elementary school keep social distance as they participate in a lesson during classes for children of critical workers amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

Schoolchildren of Gustav-Falke elementary school participate in a lesson during classes for children of critical workers amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

Schoolchildren of Gustav-Falke elementary school follow their lessons on laptops during classess for children of critical workers, amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

Schoolchildren of Gustav-Falke elementary school participate in a lesson during classes for children of critical workers amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

Schoolchildren of Gustav-Falke elementary school keep social distance as they follow their lessons on laptops during classes for children of critical workers, amid the coronavirus disease (COVID-19) lockdown in Berlin, Germany, January 28, 2021. REUTERS/Fabrizio Bensch

A Palestinian woman prepares bread as her daughter Waed Bisharat, 13, studies her school lessons, at their house, amid the coronavirus disease (COVID-19) pandemic, in a Bedouin encampment in Jordan Valley in the Israeli-occupied West Bank January 12, 2021. Picture taken January 12, 2021. REUTERS/Raneen Sawafta

Palestinian student Waed Bisharat, 13, attends an online school lesson using a mobile phone as sheep graze, amid the coronavirus disease (COVID-19) pandemic, in a Bedouin encampment in Jordan Valley in the Israeli-occupied West Bank January 12, 2021. Picture taken January 12, 2021. REUTERS/Raneen Sawafta

Palestinian student Shaima Bisharat uses a smartphone as she attends an online school lesson, amid the coronavirus disease (COVID-19) pandemic, in a Bedouin encampment in Jordan Valley in the Israeli-occupied West Bank January 12, 2021. Picture taken January 12, 2021. REUTERS/Raneen Sawafta

Palestinian student Waed Bisharat, 13, attends an online school lesson using a mobile phone as sheep graze, amid the coronavirus disease (COVID-19) pandemic, in a Bedouin encampment in Jordan Valley in the Israeli-occupied West Bank January 12, 2021. Picture taken January 12, 2021. REUTERS/Raneen Sawafta TPX IMAGES OF THE DAY

Palestinian student Shaima Bisharat uses a smartphone as she attends an online school lesson, amid the coronavirus disease (COVID-19) pandemic, in a Bedouin encampment in Jordan Valley in the Israeli-occupied West Bank January 12, 2021. Picture taken January 12, 2021. REUTERS/Raneen Sawafta

Palestinian student Shaima Bisharat uses a smartphone as she attends an online school lesson, amid the coronavirus disease (COVID-19) pandemic, in a Bedouin encampment in Jordan Valley in the Israeli-occupied West Bank January 12, 2021. Picture taken January 12, 2021. REUTERS/Raneen Sawafta

A safe distance sign is pictured on a street as students attend an outdoor lesson outside Liceo Cavour near the Colosseum as a part of protest against the closure of schools due to efforts to curb the spread of the coronavirus disease (COVID-19) in Rome, Italy, January 11, 2021. REUTERS/Yara Nardi

Students attend an outdoor lesson outside Liceo Cavour near the Colosseum as a part of protest against the closure of schools due to efforts to curb the spread of the coronavirus disease (COVID-19), in Rome, Italy, January 11, 2021. REUTERS/Yara Nardi

Students attend an outdoor lesson outside Liceo Cavour near the Colosseum as a part of protest against the closure of schools due to efforts to curb the spread of the coronavirus disease (COVID-19), in Rome, Italy, January 11, 2021. REUTERS/Yara Nardi

Students attend an outdoor lesson outside Liceo Cavour near the Colosseum as a part of protest against the closure of schools due to efforts to curb the spread of the coronavirus disease (COVID-19), in Rome, Italy, January 11, 2021. REUTERS/Yara Nardi

Students attend an outdoor lesson outside Liceo Cavour near the Colosseum as a part of protest against the closure of schools due to efforts to curb the spread of the coronavirus disease (COVID-19), in Rome, Italy, January 11, 2021. REUTERS/Yara Nardi

Primary school teacher Marzio Toniolo's pupils, wearing masks, sit at a distance apart from each other during a lesson as they return to the classroom as part of Italy's coronavirus disease (COVID-19) regulations after the holidays, in Santo Stefano Lodigiano, Italy, January 7, 2021. Toniolo has been documenting what life has been like for a small cluster of northern Italian towns since they were put on lockdown weeks before the rest of the country in February last year. REUTERS/Marzio Toniolo

Primary school teacher Marzio Toniolo's pupils, wearing masks, sitting at a distance from each other attend a lesson as they return to the classroom as part of Italy's coronavirus disease (COVID-19) regulations after the holidays, in Santo Stefano Lodigiano, Italy, January 7, 2021. Toniolo has been documenting what life has been like for a small cluster of northern Italian towns since they were put on lockdown weeks before the rest of the country in February last year. REUTERS/Marzio Toniolo TPX IMAGES OF THE DAY

A Buddhist novice monk sits in his tent before a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist novice monk attends a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist monk studies in his tent at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist monk teaches during a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

Buddhist novice monks attend a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist novice monk attends a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist novice monk with a face mask haning on his ear attends a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist novice monk passes his time before a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

Buddhist novice monks attend a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

A Buddhist novice monk with a mask hanging on his ear attends a lesson at Wat Molilokayaram monastic educational institute during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand January 7, 2021. REUTERS/Soe Zeya Tun

College students Jenebyl Cipres, 19, Almer Acuno, 21, Jester Rafon, 20, and Rosemine Gonzaga, 19, work on online worksheets in a hut on a mountain, as their community does not have enough signal for internet connection, following the suspension of physical classes during the coronavirus disease (COVID-19) outbreak, in Sitio Papatahan, Paete, Laguna, Philippines, October 22, 2020. "I always fear I wouldn't be able to follow along to our lessons compared to my classmates who are in a better situation, in a more comfortable environment. I'm not jealous because I'm used to this way of living. I'm just scared to be left behind," said Rafon. REUTERS/Eloisa Lopez SEARCH "LOPEZ SCHOOL ONLINE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Milly, 8, takes part in an online school lesson from home as the country starts a lockdown, in Hertford, Britain, January 6, 2021. REUTERS/Andrew Couldridge

Milly, 8, takes part in an online school lesson from home as the country starts a lockdown, in Hertford, Britain, January 6, 2021. REUTERS/Andrew Couldridge

Milly, 8, takes part in an online school lesson from home as the country starts a lockdown, in Hertford, Britain, January 6, 2021. REUTERS/Andrew Couldridge

Milly, 8, takes part in an online school lesson from home as the country starts a lockdown, in Hertford, Britain, January 6, 2021. REUTERS/Andrew Couldridge

Young students at Milton Keynes Preparatory School take part in online lessons on the first day of a new term amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain January 5, 2021. REUTERS/Andrew Boyers

Teachers and young students at Milton Keynes Preparatory School take part in online lessons on the first day of a new term amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain January 5, 2021. REUTERS/Andrew Boyers

Teachers and young students at Milton Keynes Preparatory School take part in online lessons on the first day of a new term amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain January 5, 2021. REUTERS/Andrew Boyers

Young students at Milton Keynes Preparatory School take part in online lessons on the first day of a new term amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain January 5, 2021. REUTERS/Andrew Boyers

Young students at Milton Keynes Preparatory School are seen taking part in online lessons on the first day of a new term amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain January 5, 2021. REUTERS/Andrew Boyers

Two home-schooled children attend their lessons at home in Milton Keynes, Britain, January 5, 2021. REUTERS/Andrew Boyers

Two home-schooled children attend their lessons at home in Milton Keynes, Britain, January 5, 2021. REUTERS/Andrew Boyers

Charlotte Rose assists one of her children, who is home schooled in Milton Keynes, Britain, January 5, 2021. REUTERS/Andrew Boyers

Teacher Claudia Mohme from the Freiherr-vom-Stein secondary school in the North Rhine-Westphalian city of Bonn conducts a lesson for just two pupils amid the coronavirus disease (COVID-19) pandemic in Bonn, Germany, December 14, 2020. REUTERS/Wolfgang Rattay

Teacher Claudia Mohme from the Freiherr-vom-Stein secondary school in the North Rhine-Westphalian city of Bonn conducts a lesson for just two pupils amid the coronavirus disease (COVID-19) pandemic in Bonn, Germany, December 14, 2020. REUTERS/Wolfgang Rattay

Teacher Claudia Mohme from the Freiherr-vom-Stein secondary school in the North Rhine-Westphalian city of Bonn conducts a lesson for just two pupils amid the coronavirus disease (COVID-19) pandemic in Bonn, Germany, December 14, 2020. REUTERS/Wolfgang Rattay

A surfing coach conducts a lesson on a beach in Sanya, Hainan province, China November 25, 2020. Picture taken November 25, 2020. REUTERS/Tingshu Wang