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Refugee and migrant children draw pictures with the help of their teacher inside the Schisto refugee camp in Schisto, Greece on Oct. 4, 2018. World Teacher's Day is held annually on Oct. 5. (Xinhua/Lefteris Partsalis)
Refugee and migrant children draw pictures with the help of their teacher inside the Schisto refugee camp in Schisto, Greece on Oct. 4, 2018. World Teacher's Day is held annually on Oct. 5. (Xinhua/Lefteris Partsalis)