School library, as an information unit will have a good performance if it has adequate management. This study used a qualitative approach with multi-site study design. The data were collected through in-depth interviews, observations, and documentation studies. The results of this study are as follows: (1) school library planning is determined by participatory, appropriate processing of library materials, procurement planning of library materials based on bottom-up need analysis, publication activity, funding, and excellent service for visitors; (2) organization of the school library is determined by the availability of organization structure, job division, authority division, command unity, and definite coordination; (3) the success of school library implementation is determined by participatory, the direction and motivation from leader to subordinates, healthy communication and awarding to librarians; and (4) evaluation of the school library is determined by the availability of complete and comprehensive periodic written reports.