This report describes a program designed to decrease students' undesired behaviors. Undesired behaviors addressed include tattling, hitting, kicking, biting and pinching. A review of existing literature revealed these behaviors affected all aspects of the classroom. The sample population consisted of two sessions of at-risk pre-kindergarten and one self-contained first grade class in neighboring communities in northern Illinois. There were numerous reasons students resorted to these undesired behaviors. These behaviors included lack of social skills instruction, inability to resolve conflicts independently, limited opportunities to practice social skills, exposure to violent and inappropriate behaviors through television and video games, and changes in family structure. Studies indicated solutions to these causes include explicit teaching of social skills, incentives, conflict resolution role playing and ample opportunities to practice social skills. The intervention period lasted approximately four months. Post intervention data was inconsistent. Researchers felt interventions were successful as undesired behaviors in the classroom and elsewhere in the school decreased. Included are 6 appendices. [Master of Arts Action Research Project, Saint Xavier University.]