The Ripple Effect -First Grade

In first grade, Paul's life is forever changed by a series of events. He is placed in a reading group, where he encounters a first-year teacher and is forced to sit next to Jimmy, a misfit who has trouble controlling his behavior. A mentor is brought in to help the class, and from that moment on, Paul's perspectives and attitudes are transformed. The story suggests that we can all improve ourselves by surrounding ourselves with the right people. But exactly, just WHO was the mystery mentor?