This study sought to discover how one high school principal sustains a context for continued improvement through PLCs using case study methodology. Schools comprised of PLCs allow educators to grapple with the unique needs of their students in their specific contexts. The problem is that there is limited literature and research to indicate how leaders sustain PLCs over time. Therefore, the overarching research question of this study was: How do the principal, PLC leaders, and teachers in a school that has developed and implemented PLCs describe their experience of the change process to sustain the work of continuous improvement?