Teachers' Job Description and Students' Academic Performance in Lagos State Junior Secondary Schools

The specification and implementation of teachers’ professional responsibilities are increasingly recognised as factors associated with student success. This study examined the relationship between the dimensions of teachers’ job descriptions, specifically planning, organising, lesson delivery, and classroom management, and students’ academic performance in public junior secondary schools in Lagos State, Nigeria. The study adopted a descriptive survey and correlational research design. The target population comprised 8,865 teachers in 327 public junior secondary schools across the state’s six Education Districts. A multi-stage sampling procedure was used. Of 563 questionnaires administered, 551 were valid for analysis, representing a 97.9% response rate. Data were collected using the Teachers’ Job Description Questionnaire (TJDQ), a 20-item instrument on a 4-point Likert scale, while students’ academic performance was measured using Basic Education Certificate Examination (BECE) results obtained through a Record Observation Format. The TJDQ achieved a Cronbach alpha reliability coefficient of 0.85. Data analysis involved descriptive statistics and Pearson Product-Moment Correlation at the .05 level of significance. The findings revealed a strong, positive, and statistically significant relationship between teachers’ job description and students’ academic performance $r=.711$, $N=551$, $p<.001$. Among the four dimensions, planning and lesson delivery had the highest mean scores $M=3.34$, followed closely by classroom management $M=3.33$ and organising $M=3.30$. The study concluded that clearer and more effective execution of prescribed instructional duties was associated with higher student achievement. Recommendations include the formal codification of teachers’ job descriptions by educational authorities and the provision of regular professional development focused on the core instructional dimensions.