This research considers the federation three-dimensional perspective which established that the municipalities are enabled as federated entities since our Brazilian Constitution from 1988 and our LDBEM from 1996. The increasing numbers in decentralization of primary education and the increasing enrollment rates among students to whom enrollment in mandatory has brought new responsibilities and has made work more complex for educational administrators. This research aimed to i) comprehend how our public networks administratively organized themselves in order to cope with more enrollments and the new demands and ii) to investigate the institutional arrangements, the actions taken by managers and the possible relations among the various achievement profiles of students in regards to educational quality and equity. This quantitative research was complemented by case studies and used studies in educational management and policy as reference. The analysis was made from three keywords: social and educational context, institutional arrangements and management focus. From this study, it was observed that there is commitment and strong effort in order to guarantee enrollments to students and a successful school attendance. However, some external interference, especially the local policies, the technical limitations, the little resource from families and from our public network make more difficult to elaborate educational policies which effectively promote educational quality and equity.