After an overview of the literature on challenges facing library instructors and their coordinators, the chapter describes how the communities of practice model relates to professional development in librarianship, specifically in the area of instructional development. A case study of a community of practice fostered by an instruction coordinator at an academic library is detailed. Academic librarians may encounter several challenges when entering the classroom as library instructors, and instruction coordinators seek to address these and other challenges as they build library instruction programs. By developing a community of practice, instruction coordinators can enable library instructors to learn together. The case study describes how the Instruction Coordinator cultivates library instructor development for members of the Teaching and Learning Team at Loyola University New Orleans’ Monroe Library through a community of practice model. The practical implications for this chapter are that instruction coordinators can establish instructional development opportunities that allow library instructors to enhance their teaching abilities and ultimately further library instruction programs. Communities of practice are well known in several fields and have been discussed in the library literature. This chapter provides additional value to researchers and practitioners through the discussion and application of the concept in the context of library instruction at academic institutions. The case study provides specific examples of how instruction coordinators at other academic libraries can apply the community of practice model and instructional development opportunities to a library instruction program in order to build and sustain a learning culture that supports library instructor development.