Lesson study: The core of Japanese professional development

The overview that I will provide is based on approximately 75 interviews with Japanese elementary classroom teachers and administrators, and 40 observations of research lessons that more than 30 schools in different regions of Japan, including many ordinary public schools in both low-income and middle-income neighbohoods, and six nationaol public schools. I videotaped many of these lessons for analysis. I speak and read Japanese, so the interviews were conducted in Japanese.