In this study teacher centers are explored as one successful approach to professional inservice training. A descriptive study of one teacher center and the observed behaviors of the teachers involved is presented as an example of the problems faced by a typical center and how they are overcome. Practical questions of developing a teacher center, funding, and evaluating its success in meeting the needs of those involved are discussed. The study concludes with an examination of the issues involved in the development of teacher centers and possible resolutions of these issues. Included in the appendixes are a list of Illinois teacher centers and a resource guide to articles on teacher centers. (JD)