Digos City National High School (DiCNHS) formerly known as Davao del Sur National High School, is situated at Rizal Avenue, Zone II, Digos City, is one of the biggest school in Davao Region, under the jurisdiction of the DepEd Division of Digos City. The Digos City National High School is also once the second largest secondary school in the country in terms of student population, second only to Rizal National High School in Pasig. Founded in August 1946 with the name of Digos Junior High school.