Dr. Tim R. Westerberg served as a high school principal for 26 years, the last 20 of which were at Littleton High School in Littleton, Colorado (1985–2005). Prior to entering school administration, Dr. Westerberg taught social studies and coached at the high school level in Illinois and Iowa. He earned his B.S. and M.A. degrees from the University of Iowa and his Ph.D. in Educational Administration from Iowa State University. He now resides in Dillon, Colorado.

In addition to his work as a teacher and administrator, Dr. Westerberg has been active in a variety of school transformation, staff development, and leadership training initiatives in Colorado, across the nation, and internationally. He served on the NASSP/Carnegie Foundation Commission on the Restructuring of the American High School, which produced the seminal report, Breaking Ranks: Changing an American Institution. He also played a significant role in the development of Breaking Ranks II which was released in February of 2004. His other recent professional activities include serving as a member of Robert Marzano's What Works in Schools professional development faculty, president of the Colorado Association of School Executives, member of the Colorado Commission for High School Improvement, and interim executive director of the Alliance for Quality Teaching.

Dr. Westerberg has received numerous awards in recognition of his service to the education profession, including being named as one of four finalists for the NASSP/Met Life Principal of the Year program in 1994, the Honor Administrator Award by the Colorado Music Educators Association in 1998, and the Department Service Award by the Colorado Association of Secondary School Principals in 1999. He currently serves as the president of the Alliance for Quality Teaching and is also author of the book, Creating the High Schools of Our Choice (2007), a principal's perspective on the realities of high school reform.