The Human Capital Index (HCI) is an annual measurement prepared by the World Bank.
[1] HCI measures which countries are best in mobilizing their human capital, the economic and professional potential of their citizens.
The index measures how much capital each country loses through lack of education and health.
[2] HCI is used in country studies of employment and wages, for example in Ukraine after Russia's invasion.
[3] The applications to measuring human capital were developed in research by Noam Angrist, Simeon Djankov, Pinelopi Koujianou Goldberg, and Harry Patrinos in the scientific journal Nature.