Elementary school students wearing face masks attend class, as schools reopen on trial basis after the government extended restrictions to curb the spread of coronavirus disease (COVID-19) in Jakarta, August 30, 2021. REUTERS/Ajeng Dinar Ulfiana

An elementary school student wearing a face mask and face shield is checked with a thermal scanner before entering a class, as schools reopen on trial basis after the government extended restrictions to curb the spread of coronavirus disease (COVID-19) in Jakarta, August 30, 2021. REUTERS/Ajeng Dinar Ulfiana

Elementary school students wearing face masks wash their hands after a class as schools reopen on trial basis after the government extended restrictions to curb the spread of coronavirus disease (COVID-19) in Jakarta, August 30, 2021. REUTERS/Ajeng Dinar Ulfiana

Elementary school students wearing face masks stand in line after a class as schools reopen on trial basis after the government extended restrictions to curb the spread of coronavirus disease (COVID-19) in Jakarta, August 30, 2021. REUTERS/Ajeng Dinar Ulfiana

Elementary school students wearing face masks and face shields attend class, as schools reopen on trial basis after the government extended restrictions to curb the spread of coronavirus disease (COVID-19) in Jakarta, August 30, 2021. REUTERS/Ajeng Dinar Ulfiana

Elementary school students wearing face masks attend class, as schools reopen on trial basis after the government extended restrictions to curb the spread of coronavirus disease (COVID-19) in Jakarta, August 30, 2021. REUTERS/Ajeng Dinar Ulfiana