Denise M. Walston is the Director of Mathematics for the Council of the Great City Schools where she provides member districts support for improving student achievement and for implementing the Common Core State Mathematics Standards. She has served on numerous Council of the Great City Schools' support teams in the area of curriculum, instruction, and professional development. Denise retired from Norfolk Public Schools as the Senior Coordinator of K-12 Mathematics. Her responsibilities included the development of a K-12 mathematics curriculum; providing job-embedded professional development; and leveraging resources to support teacher leaders and administrators. During her tenure, Norfolk Public Schools embarked on an Algebra For ALL initiative which resulted in more than 50 percent of students completing algebra by the end of grade eight while simultaneously improving student achievement and closing achievement gaps in mathematics. She has also served as an adjunct instructor with Old Dominion University. She is also currently the first Vice President of the National Council for Mathematics Supervision and is on the Board of the Virginia Mathematics and Science Coalition. Denise received her B.A. degree from The University of North Carolina at Greensboro in Mathematics and History and her M.Ed. in Mathematics Education from Old Dominion University.