Cerdeña also known as “ANSAN” is a barangay in the Municipality of Malabuyoc in the province of Cebu. Its population as determined by the 2015 census was 1,993. Elevation at these coordinates is estimated at 527, 2 meters or 1 877. 3 feet above the sea level. Its coordinates in the GPS is 9.672623, 123.39801

Cerdeña National High School (CNHS) is a public secondary school in the municipality of Malabuyoc founded on June 19, 1999.And having the batch of 2002-2003 as it’s pioneering graduates .Mrs. Madelyn T. Gallantes was the designated teacher in charge of Cerdeña National High School at that time together with her four teachers namely ,Mrs. Gaudiosa Cardosa , Mrs. Sherry Allosada , Mrs. Pamela Allosada and Miss . Detuya. During the construction of the said school, the classes were held at the old DAY Care Center of Cerdeña. Through the help and efforts of former barangay captain Guadalupe Ponce together with her active counsilor Hon. Amalia Ejurango , they went to the office of the mayor which was Honorable Lito Creus to seek support in establishing a secondary school in the said barangay. With the joint forces of the three active leaders, together they went to the former Congressman, Simeon Kintanar to ask for fund support in order to make their project into reality. Thru the leaders’ dedication and hard work, a public secondary school was founded. The people in the community was very grateful to have an accessible and affordable school. At present the school offers both Junior and Senior High School. We offer Academic Track such General Academic Strand (GAS) for its Senior High School Program under the Department of Education or DepEd. Currently, the school has 10 teachers headed by our Head Teacher, Victor Y. Mira.