"Positive Action," a K-12 program, aims to promote a positive self-concept, character development, healthy behavior, and social-emotional skills and to reduce disruptive and problem behavior. The curricula for elementary and middle school students each have seven units per kit, with nine kits per grade level. The high school curriculum has six units per kit, with four kits per grade level. The studies included 56 elementary schools in Florida and Hawaii. Both studies examined results on students' behavior and academic achievement. Both studies assessed elementary school student outcomes in the behavior and academic achievement domains. When the What Works Clearinghouse (WWC) aggregated the results in each of these domains, the average effect sizes were statistically significant. So the WWC rated the program as having positive effects on both behavior and academic achievement. Character education, an evolving field, is beginning to establish a research base. The evidence presented in this report is limited and may change as new research emerges. (Contains 8 footnotes.) [This publication was produced by the What Works Clearinghouse. The following studies are reviewed in this intervention report: (1) Flay, B., Acock, A., Vuchinich, S., & Beets, M. (2006). Progress report of the randomized trial of Positive Action in Hawaii: End of third year of intervention. Available from Positive Action, Inc. 264 4th Avenue South, Twin Falls, ID 83301; and (2) Flay, B. R., & Allred, C. G. (2003). Long-term effects of the Positive Action program. "American Journal of Healthy Behavior," 27(1), 6-21.]