PREP (Preparation through Responsive Educational Programs) is a teacher training model that is part of an educational research project presently in its fifth consecutive year of operation in Washington, D.C. area junior high schools. Its primary objective is the development and evaluation of procedures and curricula to assist academically or socially deficient junior high school students to improve their in-school achievement and to increase constructive out-of-school behavior. It is a multi-faceted program involving intensive academic skill training using individualized instructional procedures, social skill training with specially developed curricula, training and liaison work with parents, special reinforcement procedures,and training of teachers. The paper describes the changes that have been made in PREP's approach to teacher training and presents the conceptual model that presently guides PREP teacher training efforts. The present model is a more empirically based, idiosyncratic model in which teacher behaviors are evaluated primarily in relation to the achievement of particular short-term student outcomes. (JMF)