This report describes the Eclipse program, which was developed for middle school students with school-behavior problems. The program combines group counseling and judo training, a non-violent sport that promotes social, psychological, and physical development. During the program, groups of approximately 15-20 students participate for 1 hour each day in alternating sessions of counseling and judo over a 10-week period. Since 1999, Eclipse has been offered in 6 different schools in the Ottawa region. An evaluation of the program was conducted in a high school with special programming for youth with academic difficulties. The school had integrated Eclipse into their grade 9 curriculum, meaning all grade 9 students (n=50) were required to participate. Students with higher than average aggressive tendencies upon entry to Eclipse reported reductions in their aggressiveness at program completion. In addition, students who began the program with a tendency to attribute responsibility for personal experiences to external factors reported a shift toward taking more personal responsibility for their actions over the course of the Eclipse program. In contrast, students of average or low aggressiveness and students with an internal locus control at the beginning of Eclipse did not report any systematic pattern of change on these variables. (Contains 10 references.) (CR)