Supported collaborative teacher inquiry (SCTI) describes the process of professional development in which teacher teams build collaborative structures for the purpose of inquiring into aspects of their own instructional practice. Professional development performed collaboratively and grounded in "the work teachers do" is a highly effective forum for challenging existing beliefs about content, learners, and teaching and using data and research to reflect on, and possibly change, instructional practice. The contributors to this volume describe supported collaborative inquiry as a framework...