A professor of educational leadership in the Center for Research and Doctoral Studies in Educational Leadership at Sam Houston State University. Previously, a professor of educational leadership at the University of Louisville. Also served as a public school teacher, principal, and superintendent of schools. Authored 20 books and more than 200 articles in education. Best known publications include Educational Administration: Concepts and Practices (with Allan C. Ornstein), and The Principalship: Vision to Action (with Beverly J. Irby).