FILE PHOTO: Teacher Leonard Gamaigue, who was inspired to set up a mobile school when he saw children playing at a nomad camp, gives a class to children at a makeshift open-air classroom as part of a mobile school program offering a rare chance of education for their nomadic community, at a nomad camp in Toukra, outside N’Djamena, Chad, September 1, 2022. REUTERS/Mahamat Ramadane