Unlocking Student Achievement: A Structural Analysis of Educational Cost, Teacher Competence, and Learning Outcomes in Lagos Private Schools

Abstract

Purpose: This study examined how educational cost and teacher professional competence influence learning outcomes in private junior secondary schools in Lagos State, Nigeria. It addresses the concern that high parental spending in private schools does not always produce stronger academic performance, highlighting the need to understand how teacher competence shapes this relationship. Methodology: A correlational descriptive survey design was employed, drawing on Human Capital Theory and Rational Choice Theory. The sample consisted of 300 teachers and administrators selected from 30 private schools across six educational districts using stratified random sampling. Data were collected through the Educational Cost and Competence Questionnaire and Basic Education Certificate Examination results from 2021 to 2023. Descriptive statistics, Pearson correlation, multiple regression, and path analysis were used. Results: Findings showed strong positive correlations among educational cost, teacher competence, and learning outcomes. Educational cost and teacher competence jointly explained 62.6% of the variance in student performance. Path analysis confirmed a partial mediation effect, demonstrating that financial investment improves learning outcomes more effectively when it enhances teacher professionalism and instructional quality. Novelty and Contribution: The study provides new empirical evidence showing that educational spending affects achievement both directly and through teacher competence. By linking resource allocation with human capital development, the study extends theoretical understanding of how school finances translate into academic results in developing economies. Practical and Social Implications: The study highlights the need for private schools to prioritize strategic resource allocation, continuous professional development, and performance-based incentives. The findings guide school managers, policymakers, and parents by showing that improved learning outcomes depend not only on financial investment but also on strengthening teacher competence as a central driver of educational quality.