The Human Development Index (HDI) is an indicator created by the United Nations Development Program to determine the level of development of countries based on health, education, and income. It is measured on a scale of 0 to 1, with 0 being the lowest rating and 1 being the highest. Countries are classified by the UNDP as having high, medium, or low human development based on their HDI score. The HDI does not account for inequality within countries. The Inequality-adjusted HDI (IHDI) captures the loss in human development due to inequality and provides a measure of the average HDI accounting for distribution of health, education and income.