Prapansak Poosrithan. A MODEL FOR DEVELOPING ACADEMIC LEADERSHIP IN SCHOOL ADMINISTRATORS UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE KALASIN. JBPE [internet]. 2026 Jun. 18 [cited 2026 Sep. 12];10(1):58-67. available from: https://so19.tci-thaijo.org/index.php/JBPE/article/view/3319