About 80% of the world's children live in developing countries. Their well-being as adults depends heavily on the education they receive. School enrollment rates have increased dramatically in developing counties since 1960, but many children still leave school at a young age and often learn...

Hundreds of millions of children in less developed countries suffer from poor health and nutrition. Children in most less developed countries also complete far fewer years of schooling, and learn less per year of schooling, than do children in developed countries. Recent research has shown that...