建平县黑水镇后山小学座落于辽蒙边境的老哈河畔,始建于民国初年,校园占地面积24346平方米,现有教学班12个,学生338人,教师20人。 The Heishan Primary School of Heishui Township, Jianping County is located along the Laoha River at the border of Liaoning and Mongolia. It was founded in the early Republic of China. The campus covers an area of ​​24,346 square meters. There are 12 teaching classes, 338 students and 20 teachers.