The purpose of this case study was to evaluate the perceptions of participants regarding their effectiveness in responding to defiant student violence as a crisis response team, following crisis response team training. The participants were a group of 10 volunteer PK-6 public school educators from western Wisconsin. The study took place during the fall semester of 2009. The research methods included the presentation of the Nonviolent Crisis Intervention[R] program with additional crisis response team training components. Following the training there were 6 bi-weekly crisis response team meetings held to collect crisis intervention data, to review and practice intervention techniques, and to share background information of defiantly violent students. Three on-site visits took place during which the researcher met individually with crisis response team members to record participant responses to the research questions, to record and answer questions, and to record individual participant's perceptions of developing themes. A written survey was administered prior to the start of the study and again at the conclusion of the study to assess perceptions of crisis response team effectiveness. These survey findings were compared to the outcome data from the bi-weekly meetings and on-site visits. The most distinctive finding was that participants said they were more effective, consistent, proactive, calm, and confident in their responses to defiant student violence following crisis response team training. The main conclusion was that ongoing structured crisis response team meetings would improve crisis response team interventions to defiant student violence. [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.]