This study examined the challenges affecting the implementation of educational policies in public secondary schools in North-West Zone, Nigeria. Three objectives and research questions guided the study, which adopted a correlational research design. The population comprised 24,821 teachers across the seven North-Western states, with a purposive sample of 378 secondary school teachers. Data were collected using three researcher-designed questionnaires, validated by experts. Reliability was established through a test-retest method, yielding coefficients of 0.76, 0.74, and 0.84 respectively. Data were analyzed using tables, mean, and standard deviation. Findings revealed a high level of challenges in policy implementation. The study concluded that although school administrators and teachers play vital roles, their efforts are hindered by inadequate training, unclear guidelines, and limited involvement in policy formulation. It is therefore recommended that government and relevant authorities ensure adequate funding, timely resource allocation, and regular provision of instructional materials to improve policy implementation.