He previously served as a Senior Scholar at the Carnegie Foundation for the Advancement of Teaching where he established the Carnegie Knowledge Media Laboratory. His research includes studies of reform efforts at the school, district, and national levels, and his current work includes an international study of accountability policies in higher and lower-performing countries. He is also involved in a variety of efforts to develop new ways to use multimedia and the internet to document teachers’ expertise and build public understanding of high quality teaching. His books include Managing to Change: How Schools can Survive (and Sometimes Thrive) in Turbulent Times (Teachers College Press, 2009) and Into the Classroom: Developing the Scholarship of Teaching and Learning (Teachers College Press, 2005).