Thomas R. Hoerr retired after leading the New City School in St. Louis, Missouri, for 34 years and is now the Emeritus Head of School. He teaches in the educational leadership program at the University of Missouri–St. Louis and holds a PhD from Washington University in St. Louis.

Hoerr has written six other books—Becoming a Multiple Intelligences School, The Art of School Leadership, School Leadership for the Future, Fostering Grit, The Formative Five, Taking Social-Emotional Learning Schoolwide—and more than 160 articles, including "The Principal Connection" column in Educational Leadership.