The study reported in this paper focuses on teacher perceptions of students' affective or noncognitive behavior in the classroom. Elementary school teachers were asked to describe in writing five events or situations involving students that they judged to be fairly typical and that had occurred in their classrooms. The emphasis was upon events rather than individuals, so a broad perspective might be obtained on the teachers' perceptions of student behavior. Results suggest that students' adjustment to the classroom and other students is of greater concern to teachers than individual students' personal adjustment. It was also concluded that teachers' perceptions of classroom behavior is based more upon the group than upon individuals. (JD)