Project Success Environment was funded under Title III of the 1965 Elementary Secondary Education Act to help alleviate the behavioral and academic problems of economically disadvantaged inner city students by providing them with the opportunity to experience, on an individual basis, success in school. The program that was developed during the three years of project funding consists of: (1) a positive contingency management system designed to deliver a high rate of reinforcement (and thus success) for appropriate social and academic behaviors; (2) a classroom arrangement designed to foster small group and individualized teaching; and, (3) some revision of the standard curriculum. This three-part program, usually referred to as the "success technique," has been extensively tested in 44 classrooms over the project's three years of operation. The results showed that during this time dramatic improvements in classroom management were consistently obtained. In addition, each successive year of the project's operation resulted in more substantial gains being made in achievement. Indeed, the very strong effects obtained in Year Three indicated that many of the problems associated with inner-city teaching have been eliminated or greatly reduced in project classrooms. (Author/JM)