Collaborative learning enhances retention of information for UPSC exams as it creates an interactive environment where peers can share knowledge and clarify doubts. Engaging in discussions, working on group assignments, and teaching each other fosters deeper understanding and recall. This approach encourages active participation, making it easier to grasp complex topics. Moreover, leveraging diverse perspectives enhances critical thinking and exposes candidates to various interpretations of the syllabus. By forming study groups, aspirants can motivate each other, keeping the learning process energizing and reducing the chances of burnout, ultimately leading to better retention and performance in exams.