Much prior scholarship in K-12 teacher leadership is agnostic to teachers' disciplinary areas and centrally focuses on how teachers' instructional expertise is utilized for leadership activities solely within their school. However, there are teacher leaders who engage in leadership by influencing policy development and implementation at larger…

An important characteristic of expert teaching is the ability to adapt instruction to meet learners' needs. One way this type of ownership of instruction happens is through teachers interactively constructing knowledge about pedagogical content with others. In this article, the authors looked at how a group of thirteen participants enrolled in an…