For years, the classic supervision model has frustrated both principals and teachers by fostering superior-subordinate relationships, focusing on teacher conformity rather than growth, or producing checklist data that are irrelevant to the curriculum. The Three-Minute Classroom Walk-Through offers a practical, time-saving alternative that impacts student achievement by cultivating self-reliant teachers who are continuously improving their practice. This method answers principals' key questions: • Is the work of my teachers aligned with district curriculum? • Are my teachers using research-based "best practices "? • Are they choosing the instructional strategies that will promote student achievement?