Tamara Movchan, 49-year old kindergarten teacher, collects some belongings from the debris of her apartment at a residential building destroyed by a strike, amid Russia's invasion of Ukraine, in Mykolaiv, Ukraine, September 11, 2022. REUTERS/Umit Bektas 

Tamara Movchan, 49-year old kindergarten teacher, collects some belongings from the debris of her apartment at a residential building destroyed by a strike, amid Russia's invasion of Ukraine, in Mykolaiv, Ukraine, September 11, 2022. REUTERS/Umit Bektas 

Tamara Movchan, 49-year old kindergarten teacher, collects some belongings from the debris of her apartment at a residential building destroyed by a strike, amid Russia's invasion of Ukraine, in Mykolaiv, Ukraine, September 11, 2022. REUTERS/Umit Bektas 

A teacher walks through a bedroom at a kindergarten, which locals said was damaged by recent shelling, in the separatist-controlled city of Donetsk, Ukraine February 26, 2022. REUTERS/Alexander Ermochenko 

U.S. President Joe Biden visits teacher Allison Hessemer’s pre-Kindergarten class at East End Elementary School to highlight the early childhood education proposal in his Build Back Better infrastructure agenda in North Plainfield, New Jersey, U.S. October 25, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden visits teacher Allison Hessemer’s pre-Kindergarten class at East End Elementary School to highlight the early childhood education proposal in his Build Back Better infrastructure agenda in North Plainfield, New Jersey, U.S. October 25, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden visits teacher Allison Hessemer’s pre-Kindergarten class at East End Elementary School to highlight the early childhood education proposal in his Build Back Better infrastructure agenda in North Plainfield, New Jersey, U.S. October 25, 2021. REUTERS/Jonathan Ernst 

A sign counting the number of days in school hangs on the wall as kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

A sign identifies a "COVID Bathroom" for students who test positive in school for the coronavirus disease (COVID-19), at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant is reflected in a mirror while she prepares her classroom for students who will be required to wear masks because of the coronavirus disease (COVID-19) pandemic at the start of the school year, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 7, 2021. REUTERS/Brian Snyder 

Melanie, 5, is photographed with her teacher at a drive-thru graduation ceremony for kindergarten students amid the coronavirus disease (COVID-19) outbreak, in Ciudad Juarez, Mexico July 9, 2021. REUTERS/Jose Luis Gonzalez 

Melanie, 5, receives a hug from her teacher at a drive-thru graduation ceremony for kindergarten students amid the coronavirus disease (COVID-19) outbreak, in Ciudad Juarez, Mexico July 9, 2021. REUTERS/Jose Luis Gonzalez 

Teacher Patricia Ramos de Rosa receives the Oxford/AstraZeneca vaccine against the coronavirus disease (COVID-19) at "EMEI bem viver" kindergarten in Campo Bom, Rio Grande do Sul state, Brazil May 12, 2021. REUTERS/Diego Vara 

Teacher Raquel Soares Leite da Silva receives the Oxford/AstraZeneca vaccine against the coronavirus disease (COVID-19) at "Bambam e Pedrita" kindergarten in Campo Bom, Rio Grande do Sul state, Brazil May 12, 2021. REUTERS/Diego Vara 

Teacher Grace Santos receives the Oxford/AstraZeneca vaccine against the coronavirus disease (COVID-19) at "EMEI bem viver" kindergarten in Campo Bom, Rio Grande do Sul state, Brazil May 12, 2021. REUTERS/Diego Vara 

Teacher Maria Luisa Silva de Souza receives the Oxford/AstraZeneca vaccine against the coronavirus disease (COVID-19) at "Bambam e Pedrita" kindergarten in Campo Bom, Rio Grande do Sul state, Brazil May 12, 2021. REUTERS/Diego Vara 

Teacher Daiana de Avila receives the Oxford/AstraZeneca vaccine against the coronavirus disease (COVID-19) at "EMEI bem viver" kindergarten in Campo Bom, Rio Grande do Sul state, Brazil May 12, 2021. REUTERS/Diego Vara 

Food that contains approximately 6,000 calories that Saith, 14, used to consume in one day before taking part in a weight loss program, is displayed for a photograph at his family home in Mexico City, Mexico, April 29, 2021. "I was bullied at school by teachers and classmates because I look very big for my age. I was bullied from kindergarten to primary school. I used to feel very sad, frustrated and angry, at some point I didn't want to go to school anymore," said Saith. Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, where Saith underwent a weight loss program, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Nicole Jones, a kindergarten online teacher, shows a heart with her hands to her virtual students while teaching at Kratzer Elementary School in Allentown, Pennsylvania, U.S. April 13, 2021. Picture taken April 13, 2021. REUTERS/Hannah Beier TPX IMAGES OF THE DAY 

Magdalena Lipowska, teacher at the Sternschnuppe Kindergarten receives a dose of AstraZeneca's vaccine against the coronavirus disease (COVID-19) from Renate Buhr in Bremen, Germany, February 26, 2021. Hauke-Christian Dittrich/Pool via REUTERS 

Marie Rohlfs, teacher at the Sternschnuppe Kindergarten receives a dose of AstraZeneca's vaccine against the coronavirus disease (COVID-19) from Thomas Holler in Bremen, Germany, February 26, 2021. Hauke-Christian Dittrich/Pool via REUTERS 

Marie Rohlfs, teacher at the Sternschnuppe Kindergarten receives a dose of AstraZeneca's vaccine against the coronavirus disease (COVID-19) from Thomas Holler in Bremen, Germany, February 26, 2021. Hauke-Christian Dittrich/Pool via REUTERS 

Marie Rohlfs, teacher at the Sternschnuppe Kindergarten receives a dose of AstraZeneca's vaccine against the coronavirus disease (COVID-19) from Thomas Holler in Bremen, Germany, February 26, 2021. Hauke-Christian Dittrich/Pool via REUTERS 

Elizabeth Campbell, a kindergarten teacher who is classed in the 1B category, which includes teachers and childcare providers, receives the Pfizer-BioNtech COVID-19 vaccine at the University of Arizona in Tucson, Arizona, U.S., January 21, 2021. REUTERS/Cheney Orr 

Elizabeth Campbell, a kindergarten teacher who is classed in the 1B category, which includes teachers and childcare providers, receives the Pfizer-BioNtech COVID-19 vaccine at the University of Arizona in Tucson, Arizona, U.S., January 21, 2021. REUTERS/Cheney Orr 

A pre-school teacher speaks to a boy as he sits on his mother at their kindergarten after it reopened as Israel began easing a second nationwide coronavirus disease (COVID-19) lockdown, in Tel Aviv, Israel October 18, 2020. REUTERS/Amir Cohen 

A girl hugs her pre-school teacher, wearing a protective face mask, at their kindergarten after it reopened as Israel began easing a second nationwide coronavirus disease (COVID-19) lockdown, in Tel Aviv, Israel October 18, 2020. REUTERS/Amir Cohen 

A pre-school teacher wears a protective face mask while sitting next to children at their kindergarten after it reopened as Israel began easing a second nationwide coronavirus disease (COVID-19) lockdown, in Tel Aviv, Israel October 18, 2020. REUTERS/Amir Cohen 

A teacher gives a class at a kindergarten at the Chengbei Ganen Community, a residential complex built for a relocation programme as part of China's poverty alleviation effort, in Yuexi county, during a government-organised media tour in Liangshan Yi Autonomous Prefecture, Sichuan province, China September 11, 2020. Picture taken September 11, 2020. REUTERS/Tingshu Wang 

A teacher wearing protective gear plays with her students in a kindergarten, during the reactivation of several economic sectors after the end of quarantine due to the coronavirus disease (COVID-19), in Bogota, Colombia September 25, 2020. Picture taken September 25, 2020. REUTERS/Luisa Gonzalez 

Teachers wearing protective gear teach their students in a kindergarten, during the reactivation of several economic sectors after the end of quarantine due to the coronavirus disease (COVID-19), in Bogota, Colombia September 25, 2020. Picture taken September 25, 2020. REUTERS/Luisa Gonzalez 

Emily Quintero, 3, wearing a mask plays with her teacher, in a kindergarten, during the reactivation of several economic sectors after the end of quarantine due to the coronavirus disease (COVID-19), in Bogota, Colombia September 25, 2020. Picture taken September 25, 2020. REUTERS/Luisa Gonzalez 

Emily Quintero, 3, wearing a mask plays with toy blocks with her teacher in a kindergarten, during the reactivation of several economic sectors after the end of quarantine due to the coronavirus disease (COVID-19), in Bogota, Colombia September 25, 2020. Picture taken September 25, 2020. REUTERS/Luisa Gonzalez 

Kindergarten teacher Princess Bryant prepares her classroom, from where she will begin the new school year teaching classes virtually because of the coronavirus disease (COVID-19) pandemic, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom, from where she will begin the new school year teaching classes virtually because of the coronavirus disease (COVID-19) pandemic, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom, from where she will begin the new school year teaching classes virtually because of the coronavirus disease (COVID-19) pandemic, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant cleans the surfaces of her classroom before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant prepares her classroom, from where she will begin the new school year teaching classes virtually because of the coronavirus disease (COVID-19) pandemic, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant and paraprofessional Emily Lichtenstein (R) clean the surfaces of their classroom before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant and paraprofessional Emily Lichtenstein (R) clean the surfaces of their classroom before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Hand washing instructions hang over a sink in the classroom of kindergarten teacher Princess Bryant as she prepares for the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant cleans the surfaces of her classroom before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant meets one of her incoming students and parents remotely before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant cleans up and prepares her classroom, from where she will begin the new school year teaching classes virtually, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant meets one of her incoming students and parents remotely before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant cleans up and prepares her classroom, from where she will begin the new school year teaching classes virtually because of the coronavirus disease (COVID-19) pandemic, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant meets one of her incoming students and parents remotely before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant and paraprofessional Emily Lichtenstein (L) meet their incoming students and parents remotely before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant meets one of her new students, five year-old Aryanee Cruz, and Cruz's mother Astrid and brother Ryand before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant cleans up and prepares her classroom, from where she will begin the new school year teaching classes virtually because of the coronavirus disease (COVID-19) pandemic, at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant and one of her new students, five year-old Aryanee Cruz, look through the backpack off school supplies Cruz picked up before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

Kindergarten teacher Princess Bryant meets one of her new students, five year-old Aryanee Cruz, while Cruz was picking up her new Chromebook before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder 

A kindergarten teacher distributes food to students at a school, as schools reopen amid the coronavirus disease (COVID-19) outbreak, in Putrajaya, Malaysia July 1, 2020. REUTERS/Lim Huey Teng 

A kindergarten teacher teaches students to sanitise their hands during a class at a school, as schools reopen amid the coronavirus disease (COVID-19) outbreak, in Putrajaya, Malaysia July 1, 2020. REUTERS/Lim Huey Teng