7827 people. As of June 25th, 2023, there were 7 senior high schools in Dingcheng District of Changde City, including 5 ordinary senior high schools, compulsory education schools 1 and adult secondary schools 1, with a total of 695 12 students, including preschool education students 16090 and compulsory education students 45595. Dingcheng District, which belongs to Changde City, Hunan Province, was originally named Changde County and was called Langzhou in ancient times. It is located on the west bank of Dongting Lake on the south bank of Jinxiu River. It has a history of more than 2200 years since Qinjian County, which is under the jurisdiction of state, county and government.