The document discusses the Human Development Index (HDI), which is a statistic composite index of life expectancy, education, and income indicators used to rank countries' level of human development. It was created by economists Amartya Sen and Mahbub Ul Haq to assess countries' performance in health, education, and standard of living. The HDI score ranges from 0 to 1, with 1 indicating high human development. India has undertaken a large HDI program in partnership with UNDP to produce national, state, and district-level HDI reports to guide development planning.