The Industrial Arts Interaction Analysis System was used to study teacher-student behavior in junior high school industrial arts classes. Twenty industrial arts teachers were observed on three different occasions and the interaction between the teacher and students was recorded by two independent observers. The findings indicated that there was a pattern of interaction, that during administrative duties, demonstration, and lecture the teachers did nearly all of the talking, and that the Industrial Arts Situation Analysis System was capable of providing data concerning seven items in this junior high school industrial arts situation. It was concluded that the teachers need to know how to use their time more effectively, student response should be encouraged, and that an important nonverbal link exists between the teacher and class members. One recommendation was that industrial arts teacher education institutions should prepare future teachers to use their time more effectively. (GEB)