Steve Leinwand is a principal researcher at the American Institutes for Research in Washington, D.C., and has nearly 40 years of experience in leadership positions in mathematics education. He serves as mathematics expert on a wide range of AIR projects that turn around schools, improve adult education, evaluate programs, develop assessments and provide technical assistance. Before joining AIR in 2002, Leinwand spent 22 years as mathematics consultant with the Connecticut State Department of Education. Leinwand has also served on the National Council of Teachers of Mathematics Board of Directors and has been president of the National Council of Supervisors of Mathematics. He is author of several mathematics textbooks and has written numerous articles. His books, “Sensible Mathematics: A Guide for School Leaders” and “Accessible Mathematics: 10 Instructional Shifts That Raise Student Achievement,” were published by Heinemann in 2012 and 2009, respectively. Leinwand received the 2015 National Council of Supervisors of Mathematics Ross Taylor/Glenn Gilbert National Mathematics Education Leadership Award.