Joshua L. Glazer is an associate professor of education at the Graduate School of Education and Human Development at George Washington University. His interests include the design and implementation of school improvement networks, education reform initiatives for schools serving high poverty communities, and the structure and function of the education profession. He and colleagues recently published the book Improvement by Design (University of Chicago Press, 2014) which details the long-term efforts of three comprehensive school reform programs to improve teaching and learning in thousands of schools across the United States. He is currently directing a four-year study into the Tennessee Achievement School District: an ambitious state-led effort to dramatically improve learning outcomes in the most chronically underperforming schools in Tennessee. In addition, he is directing a three-year study of research practice partnerships in New York City and Baltimore funded by the WT Grant Foundation.