This study aims to look at the relationship between Principal Managerial and Library Employee Competence in School Library Services. The method used is a survey with a population of 7158 heterogeneous junior high school students. The research instrument is based on content validity. Where is calculated Reliability on each instrument with Cronbach Alpha formula. Data analysis using the formula of correlation and regression. Before the analysis is done, the reliability of each instrument is calculated, obtained from the managerial principal = tt 0.400, the competence of library employees r tt = 0.580, and school library services r tt = 0.504. Data analysis using the formula of correlation and regression. there is a positive relationship between managerial principals and the competence of library employees towards library services. Strength of relationships between variables (X1) and variable (X2) expressed by the regression equation Ŷ = 0.793 + 0.338 (X1) + 0.632 (X2) and the correlation coefficient r yI = 0.762 significance at 0.05.From the results of the study, it can be concluded that the principal must have a school library operational unit, a vision, and work with the school environment. Principals need to run open managerial for the progress of libraries and library services need to be improved in achieving better quality education.