Students and a teacher prepare to go home at Gudu Elementary School in Jiayan village, Southwest China's Guizhou province, March 9, 2012. The school only has 21 first grade students and one teacher. Moreover, the school only enrolls first-graders. It takes pupils about one hour to trek over mountains to get to school. Jiayan village is located in a remote mountain area and the income per capita is 2,600 yuan ($413) per year. [Photo/CFP]