In commemoration of International Children’s Day, Save the Children is launching a unique index exploring the major reasons why childhood comes to an early end. The End of Childhood Index focuses on a set of life-changing events that signal the disruption of childhood. It ranks 172 countries based on where childhood is most intact and where it is most eroded. It shows which countries are succeeding, and failing, to provide conditions that nurture and protect their youngest citizens. The indicators used to measure the end of childhood are: under-5 mortality, malnutrition that stunts growth, out-of-school children, child labor, early marriage, adolescent births, displacement by conflict, and child homicide.