The Effectiveness of Administrative Training Courses and Their Relationship to Classroom Management Among Physical Education Teachers in the Samarra Directorate of Education. International Journal of Experimental Sports Science Research, [S. l.], v. 2, n. 2, p. 1–7, 2026. DOI: 10.66968/ijessr. Disponível em: https://journalpejuang.web.id/index.php/ijss/article/view/155. Acesso em: 6 aug. 2026.