The study examined school plant management and students’ academic achievement in public secondary schools in Akwa Ibom State. Two research questions were raised and two research hypotheses were formulated to guide the study. The design of the study was ex-post facto. The study population consisted of 235 public secondary schools, 48, 840 SSII students and 6755 teachers in 235 public secondary schools in Akwa Ibom State. The sample comprised 118 Secondary Schools, 977 SSII students and 811 teachers were selected using multi-stage sampling technique. Two sets of instruments were used for data collection. These were researcher developed checklist and questionnaire titled “School Plant Availability Checklist (SPAC) and School Plant Utilization Questionnaire (SPUQ)”. SPUQ was responded to by both the teachers and students. The reliability co-efficient of the instrument was determined using the Cronbach Alpha statistic. The Reliability index of 0.82 was obtained. Mean and Standard Deviation were used to answer the research questions while Analysis of Variance (ANOVA) was used to test the hypotheses at 0.05 alpha level. The findings of the study revealed that there is a significant difference of availability and utilization of classroom space and school furniture on students’ academic achievement in English Language, Mathematics and Biology. The study concluded that there is need to overhaul the existing policy on school plant to ensure proper provision and utilization. It was recommended that government should make available suitable classrooms, furnitures and all the materials needed to make them functional.