Ben Klein taught mathematics at Davidson College from 1971 until 2008, when he retired, as Dolan Professor of Mathematics, from full-time service. He has continued to teach on a part-time basis ever since. He served one term as chair of the Department of Mathematics and served as chair of the Teacher Education Committee for several decades. Beyond Davidson College, he has been active in the Mathematical Association of America, serving as Chair of the Southeastern Section and on the Board of Governors of the national organization. His involvement with the AP program goes back to 1991, when he attended his first AP® Calculus Reading. He has participated in every Reading since, serving as Reader, Table Leader, and for the last 11 years, Question Leader. He was a member of the AP® Calculus Development Committee between 1999 and 2003.