High occurrences of student incivilities are a growing concern in the K-12 education system. This problem may be directly impacted by systems thinking and inconsistent school policy enforcement. At a local high school, this problem affected student learning outcomes and teacher-student interpersonal relationships. The purpose of this case study was to explore the perceptions of teachers and administrators regarding consistency in discipline policies and practices, as well as student incivilities as they related to Senge's 5 disciplines. The conceptual framework for this study was Senge's 5 disciplines of organizational learning: systems thinking, mental models, team learning, shared vision, and personal mastery. Using a case study design and responsive interviews, data from discipline procedure documents and data on student incivilities were collected from 9 teachers in Grades 9-12, as well as 2 administrators. The data were analyzed using Hatch's interpretive method. Findings indicated discipline policies and practices were ineffective and inconsistent, due to poor systemic communication structures and lack of classroom management. A recommendation was made to implement systemic classroom management policies and Positive Behavior Intervention and Support trainings. Positive social change occurs when administrators and teachers implement the systemic policies and trainings identified in this study in order to motivate students to change their patterns of incivility and, as a result, focus on learning.