Sule Muhammad and Hafsatu Abubakar (2026) “An Examination of the Relationship among Instructional Leadership Skills, Teachers’ Self-Efficacy, and School Effectiveness in Secondary Schools in Zamfara State, Nigeria”, Demagogi: Journal of Social Sciences, Economics and Education, 4(4), pp. 263–274. doi: 10.61166/demagogi.v4i4.207.