This report is related to a study of first grade reading groups and presents highlights of an analysis comparing treatment and control teachers on their use of 22 instructional principles suggested in an instructional model. The principles are presented in categories that relate to getting and maintaining the students' attention, introducing the lesson and new material to the students, calling on individual students in the group, dealing with individual learning rates within the group, giving feedback to incorrect and correct answers, and giving praise and criticism. The results discussed indicate that certain teacher behaviors can be influenced by treatment. (AEA)