The document discusses how teacher study groups can promote teacher learning and renewal through collaboration and critical reflection. It argues that when teachers collectively take responsibility for learning, both their own and their students', they are able to think through their beliefs, challenge practices, and develop innovations for their classrooms. The study groups help increase teacher motivation, commitment, and ownership over professional learning, which can contribute to school improvement and student achievement. Leadership within the groups becomes more established as teachers grow in their involvement and investment in the professional development process.