Teacher collaboration significantly affects instructional quality in schools. When educators work together, they share best practices, resources, and insights into student learning. This teamwork fosters a supportive environment where teachers can collectively address challenges and innovate teaching strategies. Collaborative planning can lead to more cohesive and comprehensive curricula, enhancing student engagement and understanding. Furthermore, interchange of feedback among teachers encourages professional development, enabling them to refine their skills and approaches to meet diverse student needs effectively.