PART I: Present, past and future. 1. Introduction: Current Problematics in Teacher Professional Learning. 2. How Did we Get Here? Historical Perspectives on Inquiry-based Professional Learning. 3. Developing courage. PART II: Professional Knowledge Building: Tenets and tools. 4. Mode 3 Knowledge: What it is and why we need it. 5. Inquiry as a framework for professional learning: Interrupting the dominant discourse. 6. Reclaiming Quality. PART III:...