Sarah Armstrong, EdD, is Senior Director of K-12 Statewide Professional Development for the School of Continuing and Professional Studies, University of Virginia. She is also President of Leading and Learning Solutions, serving as a consultant on instructional improvement, specializing in the application of brain research and effective differentiation in the classroom. Dr. Armstrong has been a reading specialist, supervisor of gifted, elementary principal and assistant superintendent. She is the author of Teaching Smarter with the Brain in Focus (2008) and A Practical Guide to Tiering Instruction in the Differentiated Classroom (2010).