PRINCIPALS’ EFFECTIVE COMMUNICATION PRACTICES AND THEIR INFLUENCE ON KENYA CERTIFICATE OF SECONDARY EDUCATION PERFORMANCE IN PUBLIC SECONDARY SCHOOLS IN MANDERA WEST SUB-COUNTY, MANDERA COUNTY, KENYA. African Journal of Emerging Issues, [S. l.], v. 5, n. 5, p. 62–72, 2023. Disponível em: https://ajoeijournal.org/sys/index.php/ajoei/article/view/406. Acesso em: 17 may. 2026.