Although he has worked for many years as a psychotherapist, Peter Guthrie once taught English at the Winsor School in Boston for six years. He also worked for several years as an editor in educational publishing. While teaching, he co-edited a popular short story anthology for middle school students with Mary Page (Little Worlds: Wayside Publishing). A few years later, he teamed up with Mary Page and Sloan Sable to co-author a three-volume grammar series for EPS, Rules of the Game. Peter has a B.A. in English and history from Grinnell College, an M.A. in American Studies from the University of Minnesota, and an M.S.W from Simmons College.