ໄຊມູນຄໍາ ອ. et al. 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 (Jul. 2025), 244–260.