64.2%。 70%。 Official website of Chongqing Education Bureau shows that the enrollment rate of Chongqing Tiezhong is 64.2%, and that of Chongqing Yang Yang Middle School is 70%. Chongqing Railway Middle School was founded in 1956 with a long cultural and historical background. 1970 transformed into a high school. 1982 was rated as the first batch of key middle schools in Sichuan province. Yangjiaping middle school in Chongqing was founded in 1957, then named as "Yangjiaping Junior High School in Chongqing, Sichuan Province".