The purpose of this study was to assess teacher perceptions in implementing a Positive Behavior Intervention and Support (PBIS) plan in an elementary school. The study was mainly quantitative, using surveys, personal interviews, and observations to measure teacher perceptions. The study focused on the common areas. The rules, procedures, and behavior matrix were developed with input from the staff. The surveys were administered, retrieved, and analyzed electronically using Google forms and an Excel Spreadsheet. Interviews were arranged to encourage dialogue and get a greater understanding of their perceptions of the PBIS process. Observations were conducted using "compliment chains". The results of the findings were shared with the faculty, and used in developing a future classroom PBIS model. [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.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]