This paper reports the preliminary results of an investigation of the effects of (1) a schoolwide discipline plan and (2) role playing, modeling, and video utilization upon the self concept of students in grades 3-6 and educable mentally handicapped students. The Piers-Harris Children's Self Concept Scale was used to assess the effectiveness of a schoolwide discipline plan by comparing the scores of students at two elementary schools, one of which had such a plan. Initial data indicated that mean scores were higher for children operating under a discipline plan. Additional data indicated that teachers perceived improvements in school climate and classroom efficiency when such a plan was in place. A pretest, posttest design was used to measure the effects of various combinations of role playing, modeling, and video utilization on the self esteem of students. It was found that students participating in such activities achieved higher mean scores on self-concept measures than the control students. (3 tables and 17 references) (EW)