This series aims to provide opportunities for researchers and practitioners in Lesson Study to share their work beyond the boundaries of their countries to an international audience. Lesson Study is increasingly popular as a tool for improving the quality of education and schools around the world. As many countries are adapting and contextualizing Japanese Lesson Study to their own needs in response to educational and curriculum reforms cognizant that what matters most is what happens in classrooms and its impact on teachers and students. As Lesson Study originates from Japan, there is also a need for English Language readers around the world to understand more deeply the underlying philosophies, policies and practices of Japanese Lesson Study in the cultural contexts of their schools and classrooms. As well as original works in English from leading figures in Lesson Study, this series will also make available outstanding Lesson Study publications originally written in Japanese but extended and revised for an English audience.