Al-Hikmah University Journal

Teachers’ Job performance is the ability of teachers to effectively fulfil their responsibilities as educators. It plays a pivotal role in determining the overall effectiveness of these educational institutions. It is intricately linked to school effectiveness in public senior secondary schools in Oyo State, as in any educational context. This paper examined the influence of teachers’ job performance on public senior secondary schools’ effectiveness in Oyo State. The research design for this study was a descriptive survey of the correlational type. The population for the study comprised 563 schools and 11,430 teachers in public senior secondary schools in Oyo State. The sample used was 387 teachers (participants). A researcher-designed instrument titled "Teachers’ Job Performance and School Effectiveness Questionnaire” (TJPSEQ)" was used in data collection. Five research hypotheses guided the conduct of the study and tested at 0.05 level of significance using inferential statistics of Pearson product-moment correlation statistics. The findings of the results indicated that there was a significant relationship between teachers’ Job performance, record keeping, mastery of subject matter, use of instructional materials, student assessment, lesson plan presentation, and school effectiveness in Oyo State. Based on the findings of the study, it was recommended, among others, that teachers should be encouraged to maintain an accurate and organized method of students' attendance, grades, and performance. Teachers should be allowed in the provision of regular subject-specific professional development programmes to deepen their content knowledge.