Originating in Asia, lesson study is gradually spreading around the globe. As evident from the papers in this issue, we have much to learn as it is implemented in a variety of cultural contexts. In this article we reflect on the goals of lesson study, the organizational supports required to sustain the practice in various contexts, and the…

For several historical and cultural reasons, the United States has long pursued a strategy of improving teaching by improving teachers. The rarely questioned logic underlying this choice says that by improving the right characteristics of teachers, they will teach more effectively. The authors expose the assumptions on which this logic is built,…