SAYMOUNKHAM, A. (2025) “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 ”, Champasack University Scientific Journal, 9(1), pp. 244–260. doi: 10.71026/cusj.v9i1.134.