Purpose This research aims to study the status of pre-university centers’ libraries in Arak in terms of mission and policy, budget, space and equipment, library collection, staff, services and activities, promotion of library services and learning in comparison with the School Library Standards.Methodology: The method used is descriptive survey and for collecting the data the questionnaire was used. It was sent to all 34 pre-university centers and 30 copies were returned. For analyzing the data, SPSS software was utilized.Findings: The findings showed that totally, pre-university centers’ libraries in Arak have observed the School Library Standards in mission and policy 67.66%, budget 66.68%, space and equipment 88.33%, library collection 50%, staff 91.11%, services and activities 59.99%, promotion of library services and learning 70%.Conclusion: Emphasizing that status quo of the libraries can be better than current condition, some suggestions for improving the status of these libraries were presented.