Purpose: This study aims to understand how to develop, support and utilize professional learning community (PLCs) to build organizational capacity to support teacher learning and collaboration. Although literature highlights the importance of leadership in creating a PLC, there is little research on specific actions leaders can take to create an authentic, sustainable PLC. Design/methodology/approach: We employed a multicase study approach at three school sites within the same district. Our research was guided by the following questions: (1) How are learning communities developed and sustained in school settings?; (2) What is the role of administrators in cultivating learning communities?; and (3) What factors contribute to and hinder the success of learning communities? Findings: Despite being in the same school district, the three schools' PLCs operated differently. The schools displayed characteristics of PLCs, with minimal implementation of all components. Developing a professional learning community at all three sites began with implementing structural factors and mandating specific activities such as weekly grade-level planning. Social factors were much more complex to control by administration, affecting the fidelity of learning and collaboration within the PLCs. Originality/value: Although the literature highlights the importance of leadership in creating a PLC, there is little research that supports specific actions leaders can take to create an authentic, sustainable community of practice. In addition, there is limited literature supporting how administrators use PLCs to build organizational capacity and support teacher learning. Our study contributes to building the empirical knowledge base related to these two areas.