This study investigated how Teachers Teaching Teachers, a staff development project, influenced the attitudes and beliefs of public school teachers and administrators. Fifty-two educators participated in the project, which lasted from November, 1987 to May, 1988. Participants were administered pre- and post-measures of Likert Bipolar Attitude Inventories and Osgood's Semantic Differential Scales, which were designated to measure attitudes and values which the project hoped to improve. Pre- and post-measures were also administered to the elementary and secondary students who were being taught by the participants at the time the project occurred. Results indicated that the mean scores for all 11 desired outcomes increased during the project. Significant differences were found for participants' self-concept, attitude toward teaching, and elementary and secondary students' perception of their teachers' effectiveness. The results support the effeciveness of Teachers Teaching Teachers as a technique for enhancing positive educator attitudes and beliefs. Statistical data and a copy of the survey questionnaire are appended. (Author/JD)