SAYMOUNKHAM A, SANGDUANGCHA S, MAHAPHOM S, ນຸຖາພອນ ທ. The Relationship between the Leadership Styles and School Effectiveness at Secondary Schools in Sekong Province: Master’s student, Education Science, Faculty of Education, Champasak University This study is a study of the relationship between the style of leadership and effective schools in comprehensive secondary education . cusj [Internet]. 2025 Jul. 9 [cited 2026 Jun. 24];9(1):244-60. Available from: https://cu-journal.com/index.php/files/article/view/134