U.S. first lady Jill Biden and Panama's first lady Yazmin Colon de Cortizo visit a local school to see hearing and vision exams, in Panama City, Panama May 20, 2022. Erin Schaff/Pool via REUTERS 

U.S. first lady Jill Biden and Panama's first lady Yazmin Colon de Cortizo, look as a student takes an eye exam during their visit at a local school in Panama City, Panama May 20, 2022. Erin Schaff/Pool via REUTERS 

A student has her information checked before taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

A student has her information checked before taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS REFILE - CORRECTING PRONOUN 

Secondary school students sit in a waiting room before taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

Secondary school students sit in a waiting room before taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

A student has his information checked before taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

Secondary school students sit in a waiting room before taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

A person distributes papers to secondary school students taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

Secondary school students take the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

A person distributes papers to secondary school students taking the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

Secondary school students take the Hong Kong Diploma of Secondary Education exams (HKDSE) as secondary schools will resume face-to-face classes on May 3, in Hong Kong, China April 22, 2022. Jerome Favre/Pool via REUTERS 

Inmate Syed Naeem Shah, 35, who serves life term and has been offered a scholarship by the Institute of Chartered Accountants of Pakistan (ICAP) after he topped in intermediate exams, is pictured outside his classroom in the Central Prison, Karachi, Pakistan January 18, 2022. Picture taken January 18, 2022. REUTERS/Akhtar Soomro 

Inmate Syed Naeem Shah, 35, who serves life term and has been offered a scholarship by the Institute of Chartered Accountants of Pakistan (ICAP) after he topped in intermediate exams, speaks during an interview with Reuters in the Central Prison, Karachi, Pakistan, January 18, 2022. Picture taken January 18, 2022. REUTERS/Akhtar Soomro 

Inmate Syed Naeem Shah, 35, who serves life term and has been offered a scholarship by the Institute of Chartered Accountants of Pakistan (ICAP) after he topped in intermediate exams, speaks during an interview with Reuters in the Central Prison, Karachi, Pakistan, January 18, 2022. Picture taken January 18, 2022. REUTERS/Akhtar Soomro 

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. REUTERS/Kevin Coombs 

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. REUTERS/Kevin Coombs 

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. REUTERS/Kevin Coombs 

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. REUTERS/Kevin Coombs 

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. REUTERS/Kevin Coombs 

Students at the Tshwane University of Technology sit on campus waiting to hear if their exams will be postponed amidst the spread of the SARS-CoV-2 variant Omicron in Pretoria, South Africa, December 03, 2021. Picture taken December 03, 2021. REUTERS/Sumaya Hisham 

A grandmother prays for her child's success in the annual college entrance examinations, at a Buddhist temple in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY 

A mother prays for her children's success in the annual college entrance examinations, at a Buddhist temple in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji 

Buddhist believers pray for their children's success in the annual college entrance examinations, at a Buddhist temple in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

Students take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

Students take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

Students wait to take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

Students take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

A school teacher wearing a personal protective equipment (PPE) guides students arriving for annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

A school teacher wearing a personal protective equipment (PPE) guides students arriving for annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Jung Yeon-je/Pool via REUTERS 

A teacher uses a hand sanitiser to prepare a student arriving for annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

Students take the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

Students take part in the annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

A teacher uses a hand sanitiser to prepare a student arriving for annual College Scholastic Ability Test (CSAT), a nationwide university entrance exam, amid coronavirus disease (COVID-19) outbreak, at a school in Seoul, South Korea November 18, 2021. Chung Sung-Jun/Pool via REUTERS 

A family prays for her daughter's success in the annual college entrance examinations, in front of an exam hall in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji 

A mother hugs her daughter as she takes the annual college entrance examinations amid the coronavirus disease (COVID-19) pandemic, in front of an exam hall in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji 

Mothers stand outside an exam hall as their children get into the hall to take the annual college entrance examinations amid the coronavirus disease (COVID-19) pandemic, in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji 

A mother hugs her daughter as she takes the annual college entrance examinations amid the coronavirus disease (COVID-19) pandemic, in front of an exam hall in Seoul, South Korea, November 18, 2021. REUTERS/Kim Hong-Ji 

A migrant seeking asylum in the U.S. undergoes an eye exam with an ophthalmologist at the "Festival of Emotional Health" on World Mental Health Day, at the health center "Todos somos Mexicanos", in Ciudad Juarez, Mexico, October 10, 2021. REUTERS/Jose Luis Gonzalez 

Former KPK chief Abraham Samad gives his speech at the anti-corruption agency building following anti-corruption agency employees firing after being declared unqualified in a controversial civil service exam in Jakarta, Indonesia, September 30, 2021. REUTERS/Ajeng Dinar Ulfiana 

Former KPK Senior Investigator Novel Baswedan waves his hand at the anti-corruption agency building following anti-corruption agency employees firing after being declared unqualified in a controversial civil service exam, in Jakarta, Indonesia, September 30, 2021. REUTERS/Ajeng Dinar Ulfiana 

An anti-corruption activist raises his hand at the KPK building following the anti-corruption agency (KPK) employee firing after being declared unqualified in a controversial civil service exam in Jakarta, Indonesia, September 30, 2021. REUTERS/Ajeng Dinar Ulfiana 

Former KPK employees are welcomed by relatives after exiting Indonesia's anti-corruption agency (KPK) building, following their firing after being declared unqualified in a controversial civil service exam, in Jakarta, Indonesia, September 30, 2021. REUTERS/Ajeng Dinar Ulfiana 

High school students take part in a protest against exams results in front of the headquarters of the Ministry of Education in Cairo, Egypt August 19, 2021. REUTERS/Mohamed Abd El Ghany 

High school students take part in a protest against exams results in front of the headquarters of the Ministry of Education in Cairo, Egypt August 19, 2021. REUTERS/Mohamed Abd El Ghany 

Students sit for an exam at Saints Coeurs Ain Najm school in Mansourieh, Lebanon, June 29, 2021. Picture taken June 29, 2021. REUTERS/Mohamed Azakir 

Students sit for an exam at Saints Coeurs Ain Najm school in Mansourieh, Lebanon, June 29, 2021. Picture taken June 29, 2021. REUTERS/Mohamed Azakir 

A teacher gives a paper to a student during an exam at Saints Coeurs Ain Najm school in Mansourieh, Lebanon, June 29, 2021. Picture taken June 29, 2021. REUTERS/Mohamed Azakir 

Students sit for an exam at Saints Coeurs Ain Najm school in Mansourieh, Lebanon, June 29, 2021. Picture taken June 29, 2021. REUTERS/Mohamed Azakir 

Cayan Hakiki studies for the university entrance exams at their home in Ankara, Turkey June 19, 2021. Picture taken June 19, 2021. REUTERS/Cagla Gurdogan REFILE - CORRECTING PRONOUN 

Cayan Hakiki studies for the university entrance exams at their home in Ankara, Turkey June 19, 2021. Picture taken June 19, 2021. REUTERS/Cagla Gurdogan REFILE - CORRECTING PRONOUN 

Family members wait outside a high school as students take part in the annual national college entrance exam, or "gaokao”, in Beijing, China June 7, 2021. REUTERS/Tingshu Wang 

A student hugs her family member after an exam as part of the annual national college entrance exam, or "gaokao”, in Beijing, China June 7, 2021. REUTERS/Tingshu Wang