The integration of blockchain technology in academic performance management has the potential to significantly improve data security, transparency, and efficiency in educational institutions. This paper examines the impact of blockchain on managing academic records, emphasizing its role in reducing data security incidents, cutting administrative costs, and enhancing time efficiency. For instance, institutions that implemented blockchain saw an 83% reduction in data security incidents and a 40% decrease in administrative costs. Additionally, the time required for transcript verification dropped from an average of 5 days to instant verification, resulting in a 100% improvement in efficiency. Student satisfaction also rose by 25%, with accuracy in academic records improving from 95% to 99.9%. These findings suggest that blockchain technology can create a more secure, efficient, and student-centered academic environment, optimizing student outcomes and institutional operations.