Rachel McCall has been with the University of Chicago's Center for Elementary Mathematics and K-12 Science Education (CEMSE) since 2004. She is the lead author of the Common Core State Standards edition and the third edition of Grade 1 Everyday Mathematics and the co-author of Everyday Mathematics My Reference Book. Currently, McCall is an Associate Director of Everyday Mathematics development and continues to be the lead author for the Grade 1 teacher and student materials. Most recently, she has been focusing her efforts on planning for the future editions of Everyday Mathematics, with an emphasis on assessment. Before coming to the University of Chicago, McCall worked for three years at Pearson Education. She spent two years in the mathematics department working on the 2004 edition of Scott Foresman-Addison Wesley Mathematics for First Grade. During that time McCall also collaborated with the team at TERC in updating Investigations in Number, Data, and Space. In her last year with the publisher, McCall participated in the planning and initial writing of the 2006 edition of Scott Foresman Science for Grades 1 and 2. McCall spent 7 years teaching elementary school in Nashville, Tennessee; Atlanta, Georgia; and Berwyn, Illinois, prior to her time at Pearson Education. McCall holds an early childhood teaching certificate, undergraduate degrees in mathematics and early childhood education, and a master’s degree in reading and learning disabilities. McCall currently lives in Nashville with her husband Chris and her two daughters, Madison and Taylor.