A Yemeni school boy holds his goat as he arrives to attend an open-air class at a unfinished school on Sept. 16, 2019 in the southwestern Yemeni village of al-Kashar in Taez governorate's Mashraa and Hadnan district at the start of the new academic year in the war-battered country. The classes are given in a field outside the school which was under construction but was never completed when funding was stopped due to the war that broke out in Yemen in 2015. (Photo/Agencies)
A Yemeni teacher gives an open-air class at an unfinished school on Sept. 16, 2019 in the southwestern Yemeni village of al-Kashar in Taez governorate's Mashraa and Hadnan district at the start of the new academic year in the war-battered country. The classes are given in a field outside the school which was under construction but was never completed when funding was stopped due to the war that broke out in Yemen in 2015. (Photo/Agencies)
Yemeni school children attend an open-air class at their unfinished school on Sept. 16, 2019 in the southwestern Yemeni village of al-Kashar in Taez governorate's Mashraa and Hadnan district at the start of the new academic year in the war-battered country. The classes are given in a field outside the school which was under construction but was never completed when funding was stopped due to the war that broke out in Yemen in 2015. (Photo/Agencies)
School children attend an open-air class under a tree near their unfinished school on Sept. 16, 2019 in the southwestern Yemeni village of al-Kashar in Taez governorate's Mashraa and Hadnan district at the start of the new academic year in the war-battered country. The classes are given in a field outside the school which was under construction but was never completed when funding was stopped due to the war that broke out in Yemen in 2015. (Photo/Agencies)