The project's purpose was to develop a Grade 1-12 curriculum to assist students in dealing with knowledge, attitudes, and behaviors involved in the constructive control of aggression. Approximately 1,870 public and parochial students participated in piloting thecurriculum. Staff from the Lakewood City Schools and The Educational Research Council of America, together with outside consultants, worked cooperatively in developing a curriculum for two-level elementary, middle and high school. Control and experimental classes were established for piloting the curriculum according to a detailed evaluation plan. Students and teachers were pre- and post-tested with knowledge and attitude measures. Experimental students showed significant growth on knowledge tests with significant differences resulting on the attitude measures among students at the middle and high school levels, and positive trends evident at the elementary level. In addition, experimental teachers showed growth in causal thinking. Revised editions of the curriculum were developed on the basis of feedback from students, teachers, experts who critiqued the curriculum and data analysis. Reaction to the project on the local, statewide, and national level justifies further dissemination, with continued research on effectiveness, and ongoing revision. (Author)