The current project evaluated the use of behavior management techniques utilized in Parent- Child Interaction Therapy (PCIT) in head start classrooms. The sample included seven Head Start classrooms; four classrooms receiving treatment and three classrooms receiving no treatment. Evaluation of the progress included observation of teacher and student behavior and teacher report of class manageability and number of time-outs. Results indicated that child behavior improved throughout the study for both groups. Both groups of teachers also gave fewer timeouts, criticized the children less often, and rated their classes as more manageable from pre- to post-treatment. Teachers receiving training gave more labeled praise following treatment. These findings provide initial support for improving teacher behavior modification skills through the use of PCIT skills modified for Head Start classrooms. (Contains 1 table.)