Panrungmanee J, Metheevachatra A, Thuenchang W. Guidelines for Using Development of Competencies of School Administrators in the Digital Age according to the Trisikkha Principles of the Educational Opportunity Expansion Schools in Noen Kham District, Chainat Province: -. jma [internet]. 2026 Apr. 25 [cited 2026 Aug. 28];13(1):430-56. available from: https://so04.tci-thaijo.org/index.php/JMA/article/view/288557