Development-impact bonds designed to pay for specific outcomes used to ensure Indian girls go through school.
If a girl in a poor country goes to school, she will probably have a more comfortable life than if she stays at home. She will be less likely to marry while still a child, and therefore less likely to die in childbirth. So, not surprisingly, there is an Indian charity that tries to get girls into school and ensure they learn something, and there are Western philanthropists willing to pay for its work.
