The paper investigated the contributions of libraries towards educational development in primary and post primary schools within Bauchi metropolis. To achieve the purpose of the study, three research questions and three objectives guided the study .The study adopted descriptive survey design and correlation. Data were collected using questionnaire and interview,which were analyzed using frequency table and simple percentage. The population of the study comprised 121 teachers who were drawn from one primary school, junior secondary school and senior secondary school respectively within Bauchi metropolis. The major findings of the study revealed that, teachers are aware of the contributions of the libraries in educational developments and there is a significant relationship between libraries and educational development in terms of: supporting teaching and learning activities, enhancing academic research and education, promoting in –service education, provision and dissemination of information,among others. The  study also discovered  that schools in Bauchi metropolis do not have libraries. Hence, the study recommended for special public awareness and orientation programmes for teachers on the importance of libraries. In addition, libraries should be built and equipped in all primary and secondary schools and librarians should be employed to manage them. There should be a synergy between the Ministry of Education, State Universal Basic Education Board and the Nigerian Library Association for improved library services and usage. To ensure success in this direction, there should be adequate budgetary provision for library services annually.