The 2012 edition of the Child Development Index tells a story of success. This edition of the Index shows that substantial progress has been made in addressing the most basic threats to child survival and well-being. On average, the lives of children around the world in the indicators we measured improved by more than 30%. This means that the chances of a child going to school were one-third higher, and the chances of an infant dying before their fifth birthday were one-third lower at the end of the 2000s than a decade before. During this period child well-being improved in 90% of the countries surveyed.