Disruptive behaviors in elementary schools are a serious concern for teachers. With mounting pressure from school district administrations, state and federal government agencies, and the communities in which these schools reside, teachers often struggle to determine the best path to achieve consistent student engagement. When inappropriate behaviors are not managed effectively, academics suffer. Positive behavior interventions and supports (PBIS) have been shown to be effective in reducing such behaviors. Professional Learning Communities (PLC) have also become very common in schools as teachers are organized into teams to collaborate and plan learning opportunities and methods for the instruction and assessment of students. The present study examined the effects of PBIS implementation through the PLC on the teaching staff in seven elementary school classrooms. This is a case study in which selected teachers were observed and interviewed to determine their level of and concerns regarding implementation and subsequent adoption level. Results indicate that the teachers all have unique experiences with PBIS and related interventions that either reduce their use or support their belief that it is an effective system. Their PLC collaboration is also discussed as it was proposed to be the medium and data catalyst for implementation. Limitations and implications of this study for researchers and practitioners are discussed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]