John F. Sullivan served as a public school English teacher and high school principal in New York State for forty-three years. Sullivan is the author of The Common Sense Guide to Le...visualizza altroJohn F. Sullivan served as a public school English teacher and high school principal in New York State for forty-three years. Sullivan is the author of The Common Sense Guide to Leadership and The Survival Bible for Administrators and Teachers. He and his wife Theresa live in Estero, Florida.visualizza meno