In this study, teachers' control behavior, classroom climate, and student self-control were investigated. Differences between urban public and military high schools concerning these variables were also examined. Participants were 102 high school students from an urban public school and 94 students from an urban 4-year military high school. The study revealed relationships among humanistic control behavior of teachers, robust classroom climates, and student self-control. Differences in control behaviors and classroom climate were found between urban public and military high school classrooms. However, no differences were found in students' self-control between urban public and military high school classrooms. (Contains 6 tables and 41 references.) (Author/SLD)