Sangkham P, Poophayang P. THE DEVELOPMENT OF PERFORMANCE INDICATORS FOR SCHOOL ADMINISTRATORS OF WORLD CLASS STANDARD SCHOOL THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE CHAIYAPHUM. JRIS [internet]. 2024 Jul. 21 [cited 2026 Sep. 23];1(2):37-50. available from: https://so17.tci-thaijo.org/index.php/JRIS/article/view/348