This study examined management functions and students’ satisfaction with library services in public secondary schools in Imo State Nigeria. The study was guided by 3 research questions and 3 hypotheses. The design of the study is a linear correlational design. The population of the study is 94,968. This is made up of 94,693 Senior Secondary School Students and 275 librarians from 275 public secondary schools in Imo State. The sample size for this study is 660 made up of 110 librarians and 550 SS2 students from 110 public secondary schools in Imo State. The sampling techniques used in this study are multi-stage, purposive, simple random and disproportionate sampling techniques. Two types of research instruments were used to collect data for this study namely; School Library Management Scale (SLMS) for school librarians and Students’ Satisfaction with Library Services Scale (SSLSS) for Students. The data collected were analyzed using Pearson (r) for the research questions and t-test of significance of correlation for hypotheses. The major findings of the study showed that: there is a very low positive relationship between planning as a management function and students’ satisfaction with library services. It was also established that there is a very low positive relationship between the organizing function and students’ satisfaction with library services and there is a significant relationship between controlling and students’ satisfaction with library services. Based on these findings, the study recommended that: there should be proper and adequate planning with the available library services because for any school library service to be effective and satisfy the needs of the students, it must be properly planned; Library services in secondary schools should be well organized in the aspect of cataloguing, classification, shelving as these will facilitate the use of library by students and ultimately improve their reading habits; Control measures should be put in place as activities should be carried out according to plans accomplished by comparing actual performance with predetermined standards with the view to correct any deviation.