Okeyo, E., G. Areba, and E. Obuba. “Head teachers’ Instructional Training and Instructional Supervisory Challenges in the Implementation of the Competency-Based Curriculum in Public Primary Schools in Kisii Central Sub-County”. Journal of the Kenya National Commission for UNESCO, vol. 4, no. 2, July 2024, doi:10.62049/jkncu.v4i2.108.