The novel is Prison of the Soul about a teacher who gets fired from the public school system for manhandling a rape suspect on the campus, a kid he caught in the act. (Sound contemporary?) The only job he can get is teaching in a one-room school behind bars in the state's supermax for violent juvenile delinquents. More than the obvious hook, it's an exploration of that aspect of the human condition wherein we build our own prisons by self-imposed limitations and fears.