This book is about a group of experienced K–12 teachers who took teacher research to another level. Their story is not only about teachers working together to improve their own teaching, but also about how their research reverberated throughout their school system and influenced how their schools were run. Grounded in the day-to-day life of classrooms and featuring dialogue from the participants, this unique volume: Shows how to use teacher research to promote student learning, teacher professionalism, and a school culture centered on student and teacher learning. Reports on teacher research projects in an elementary, a middle, and a high school where teachers studied their own classrooms, schools, and school system—to transform schools from the inside-out. Ties research findings to implications and practical recommendations for teacher colleagues, school-level administrators, central office administrators, teacher educators, professional developers, parents, and school communities. Offers examples of different types of research teachers conduct, and explains what it takes to build and sustain a teacher research community.