TRANSFORMATIONAL AND TRANSACTIONAL LEADERSHIP STYLES OF SCHOOL HEADS AND THEIR RELATIONSHIP WITH TEACHERS’ PERCEPTIONS OF SCHOOL EFFECTIVENESS IN LIANGA DISTRICT, SURIGAO DEL SUR DIVISION: A DESCRIPTIVE-CORRELATIONAL STUDY. JASDG [Internet]. 2026 Oct. 15 [cited 2026 Nov. 13];1(4). Available from: https://jasdg.com/index.php/jasdg/article/view/162