This study determined the relationship between effective school plant management and students’ academic performance in secondary schools in Akwa Ibom State, Nigeria. The study adopted a correlation survey research design. A sample of 1822 respondents which comprised 84 principals and 1738 teachers, was drawn from a population of 6073 respondents in the public secondary schools in Akwa Ibom State using the multi-stage sampling technique. The instruments for data collection were the School Plant Management Questionnaire (SPMQ) and the Students’ Academic Performance Questionnaire (SAPQ) which were all developed by the researcher. Three experts validated the  instruments, and the stability and internal consistency of both instruments were assessed using the Pearson Product Moment Correlation and Cronbach Alpha statistics. The stability coefficients for the School Plant Management Questionnaire (SPMQ) and School Academic Performance Questionnaire (SAPQ) were 0.867 and 0.914, respectively, while the internal consistency coefficients were 0.888 and 0.903, respectively.  Data collection was facilitated by three research assistants. The study employed Pearson product-moment correlation to address the research questions and linear regression analysis
was utilized to examine the research hypotheses guiding the study at 0.05 level of significance. The findings showed that: the provision, utilization, and maintenance of administrative facilities respectively significantly and to a high extent relate to students’ academic performance in public secondary schools. The study concluded that school plant management  significantly relates to students’ academic performance in public secondary schools. Based on the results it recommends that the government and principals should ensure that there is effective management of school plants in order to enhance students’ academic performances in secondary schools.