This study reports on the experiences of supervisors in a university teacher preparation program regarding their critical reflection on their practice. This has an impact on the learning opportunities available for their student teachers. Findings include: (a) an understanding of critical reflection is something that builds over time for student teachers through exposure to their supervisor's practice; (b) explicitly modeling, guiding, and communicating the importance of critical reflection in teaching practice through supervisory stance helps teacher candidates develop critically reflective practices and understandings; (c) developing critical reflection in their individual and shared practices takes time for both parties.