This bulletin presents research findings about the interpersonal relationships between science and mathematics teachers and their students. This research is based on studies that used the Questionnaire on Teacher Interaction which gathers data on students' and teachers' perceptions of interpersonal teacher behavior. A reproducible copy of the questionnaire is included and discussed. A study in Australia used a model for interpersonal teacher behavior with two axes--dominance/submission and cooperation/opposition. Results focused on actual classroom behavior and students' perceptions of ideal teachers. A study in the Netherlands investigated interpersonal teacher behavior and its relationship to student achievement and attitudes. Conclusions from both studies show that interpersonal teacher behavior is an important aspect of the learning environment, and is strongly related to student outcomes. (MKR)