The Social Progress Index (SPI) is a tool that measures the social and environmental performance of countries. It evaluates various factors, such as health, education, and personal rights, to provide a comprehensive view of societal well-being. Unlike traditional economic indicators, the SPI focuses on the quality of life and social outcomes. Developed by the Social Progress Imperative, the SPI ranks countries based on their ability to meet the basic needs of their citizens and provide opportunities for personal development. This index helps policymakers identify areas for improvement and encourages nations to prioritize social progress alongside economic growth.