Elham Kazemi is a professor of mathematics education at the University of Washington. Jessica Calabrese is the chief of School Improvement in the Renton School District and was the principal at Lakeridge Elementary, the school at which the research-practice partnership originated. Teresa Lind was the mathematics coach at Lakeridge Elementary for seven years and the former leader of the mathematics coaching network for the schools at the center of the book. Becca Lewis is the current leader of the mathematics coaching network for the schools discussed in the book. Alison Fox Resnick is a researcher at the National Center for Research in Policy and Practice at the School of Education at the University of Colorado, Boulder. Lynsey K. Gibbons is an associate professor of mathematics education at the University of Delaware.