The UNICEF unveils "pandemic classroom" at the United Nations headquarters in New York, U.S., March 2, 2021. /CFP

The model classroom has 168 sets of empty desks and chairs, with each seat representing one million children living in countries where schools have been almost entirely closed since the start of COVID-19 lockdowns. /CFP

The move is aimed to raise awareness about children's learning and well-being as well as to call for the governments' attention to prioritize reopening schools. /CFP