Periappadan LP, Kithungu RM, Kasivu GM. Effect of Headteachers’ Instructional Supervision Practices on the Implementation of Competency-Based Curriculum in Primary Schools in Katangi Zone, Yatta Sub-County Machakos County Kenya. AJOCS. 2026;7(5):209-219. doi:10.59413/ajocs/v7.i5.25