The issue of professional development is receiving increased attention, as educators and policy makers are realizing the centrality of teachers to school reform and improvement. This paper describes research on book clubs as a mechanism for professional development and discusses how different study group configurations (i.e., preservice teacher candidates and practicing teachers) utilized book club activities as a central component of their professional development activities. While participation in professional book clubs provides opportunities to examine educational issues, the process is complex and should be examined carefully.