Administrators are charged with decisions about making continuous improvements in teaching and learning. But as they focus on moving an entire district or school toward a goal, administrators often find themselves spectators to the process of changing classroom teaching practices rather than as active participants. Co-teaching with classroom teachers is a promising way for administrators to stay connected and take the perspective of teachers. It is also a mechanism to identify, generalize, and amplify high-leverage teaching practices across the school. The co-teaching experience we refer to is collaboration in the classroom, not supervision or evaluation. It includes a site administrator and classroom teacher co-planning, co-teaching, and co-reflecting on a single lesson. That lesson serves as the catalyst for ongoing learning and sharing of best practices.