Afghan children attend a class at a local school in Mazar-i-Sharif, capital of northern Afghanistan's Balkh province, June 25, 2018. Around 50 percent of Afghan children, making 3.7 million between the ages of 7 to 17 years old, have been reported to be out of school, UNICEF, or the United Nations International Children's Emergency Fund said on June 3 this year.(Xinhua/Yaqoub Azorda)