Boonsorn จ. COMPETENCIES OF SCHOOL ADMINISTRATORS AFFECTING THE SCHOOLS EFFECTIVENESS UNDER LOCAL ADMINISTRATIVE ORGANIZATIONS IN LOEI PROVINCE. Integr. Soc. Sci. J. [Internet]. 2023 Apr. 30 [cited 2026 Nov. 10];3(7):23-34. Available from: https://ojs.mbuslc.ac.th/index.php/issj/article/view/224