This study investigated school plant management for students’ academic performance in public senior secondary schools in Rivers State. Two research questions and two hypotheses were used for the study. A descriptive research design was implored for this study. The population of the study consisted of all the 6, 893 teachers in the 286 secondary schools in the 23 Local Government Areas of Rivers State. The sample size of this study comprised 1,200 teachers (participants) which were obtained by using stratified random sampling technique to select 4 schools each from 16 local government areas. Furthermore, the coefficients index value 0.87 was obtained for the instrument using test-retest method through Pearson Product Moment Correlation analysis hence, the reliability of the instruments was determined. Data gathered from the exercise were collated and statistically analyzed employing Mean, Standard Deviation and rank order statistics to answer the research questions, while Z-test statistical tool was used to test the postulated null hypotheses at 0.05 Alpha level of significance. The findings of this study revealed that school plant management influences students’ academic performance in public secondary schools in Rivers State to a high extent. The study concludes that for effective management of school plants, both the administrators, teachers and students should be involved in the management of school plants. It was recommended that the administrators of various schools should make sure they have a created local committee that will handle the management of school plants for effective students’ performances in addition with adopting and preparing a periodic time-table on the usage and on the servicing of the school plants.