This study investigates students' perceptions of teachers' pupil control behavior, classroom robustness, and student self-control. Results reveal an association between humanistic pupil control behavior of teachers and high levels of classroom robustness, high levels of classroom robustness and high student self-control, and teacher humanism in pupil control behavior and high student self-control. Furthermore, differences in pupil control behavior were found among ethnically homogeneous public high school classrooms, ethnically diverse public high school classrooms, and military high school classrooms. Differences in classroom robustness were also found between ethnically homogeneous public high school classrooms and both ethnically diverse public high school classrooms and military high school classrooms. Seven tables depicting these results are included. (Contains 24 references.) (Author/MKA)