This study provides a descriptive examination of the quality of individual children’s interactions with their teacher as a basis for understanding one source of information theorized to inform children’s and teachers’ perceptions of their relationships with each other. Children’s dyadic interactions with teacher, including their positive engagement, communication, and conflict, were observed across a large and racially/ethnically diverse sample of 767 preschool children (M = 4.39 years) at three time points in the year. (author abstract)