Professional development among teacher educators requires a framework in which collaborative learning can support growth and change. This study describes a professional development project modeled on a professional development community focused on thinking education in a teachers college. Qualitative measures revealed a multilayered process consisting of breaking personal and professional isolation through interdisciplinary collaboration, talk about student learning, improvement of teaching through skill acquisition, and professional development with the adaptation of new teaching dispositions and a sense of efficacy. The community was characterized by a safe environment which encouraged risk taking and mutual support, enabling significant change in college courses. (Contains 1 figure.)