This article describes a model for changing teacher behavior in dealing with problem students. The model reflects the incorporation of learning theory techniques (pinpointing behavior, reinforcement, shaping, etc.). A step-by-step account of how a psychologist deals with a teacher concerned about a boy's cursing is given. The teacher is encouraged to measure frequency of curses and to choose a positive reinforcement with which to reward the boy when he curses less frequently. (Author/EK)