ຂາວພະຈັນ ສ.; PHIMMASANE, K.; ດວງມະນີ ສ.; ແກ້ວກະເສີມສຸກ ສ. Study the Causes Affecting Absenteeism of Students at Lower Secondary School in Pakse Distict Champassack Province: This Research Study Aims to Study the Causes That Affect the Absence of Students at the Primary Secondary School That Depends on the Department of Education and Sports, Pakse City, Champasak Province. cusj 2025, 9, 30-46.