It would depend on what you're particularly interested in. I can follow up with you later, if you are looking at school dropouts or training programs for low-income workers or those sorts of things. It's an interesting feature of the United States that some of the best thinking is brought to bear there but that their public systems don't tend to support it, so they actually have quite long-term persistent problems with poverty.
I can follow up afterwards with a particular example for you, if you would like.