Vol. 2, Issue 1, Part A (2025)

In-service teacher professional development (TPD) plays a crucial role in improving teaching practices and enhancing educational outcomes. One of the most effective methods for promoting continuous teacher growth is through peer collaboration. Peer collaboration involves educators working together to share knowledge, solve problems, and engage in reflective practices. This article explores the role of peer collaboration in strengthening in-service teacher professional development, emphasizing its impact on both individual teachers and educational institutions. The effectiveness of peer collaboration is examined through the lens of various theoretical models, including social learning theory and collaborative inquiry. Research findings indicate that peer collaboration fosters a supportive environment where teachers feel empowered to try new teaching strategies, share resources, and reflect on their practices. Moreover, it encourages a sense of community, which is essential for sustaining professional development efforts. The article also highlights the challenges faced in implementing peer collaboration, such as time constraints, institutional support, and teacher attitudes toward collaboration. Despite these challenges, peer collaboration remains a vital strategy for enhancing teacher effectiveness and improving overall student outcomes. The objective of this paper is to provide a comprehensive understanding of the significance of peer collaboration in teacher development and to recommend practical strategies for its implementation in schools and educational settings.