Short classroom observations with meaningful feedback can improve teaching practices and student achievement. The principal should regularly visit classrooms to understand teaching and learning, communicate with teachers, and provide support to meet school goals. Feedback should focus on teaching quality, student needs, learning, and progress towards standards. Short observations allow the principal to praise teachers, provide frequent guidance, and identify professional development needs. Effective feedback is specific, honest, focused on improvement, and involves two-way communication between the teacher and principal.