Dr. Chris Stephenson is the Executive Director of the Computer Science Teachers Association (CSTA), a professional membership organization of more than 8000 educators dedicated to improving K-12 computing education. Stephenson joined CSTA in 2004 after 16 years of working at the University of Toronto’s Computer Systems Research Institute and the University of Waterloo’s Mathematics and Computing Department where she designed instructional resources and professional development for high school educators. Since 2000, Dr. Stephenson has served as the chair of the annual Computer Science & Information Technology Symposia. She is the former chair of the ACM K-12 Task Force. She is also a former president of the International Society for Technology in Education's Special Interest Group for Computer Science. Dr. Stephenson has numerous research publications in the field of computer science education and adaptive technology and has written several high school textbooks. Most recently, she served as a primary author of Ensuring Exemplary Teaching in an Essential Discipline (ACM, 2009).