Cities that tend of have better schools for middle-income families, they tend to have much better prospects for kids moving up in the income distribution.

We don’t really care about test scores. We care about adult outcomes.

I would say basically the commonplace observation that kids aren't going to earn as much as their parents is now is a coin flip at this point. Are you going to do better than your parents? It's a 50-50 chance, whereas if you were born in the 1940s or 1950s, you had more than a 90 percent chance you were going to do better than your parents. So basically almost a guarantee for most kids that you were going to achieve the American Dream of doing better than your parents did. Today, that's certainly no longer the case.

Every extra year you spend in a better environment makes you more likely to go to college, less likely to have a teenage pregnancy, makes you earn more as an adult, makes you more likely to have a stable family situation, be married, for instance, when you're an adult.

The solution for rising up kids in the income distributionlies is in creating better childhood environments for kids growing up, especially in low income families. And so what means such things like schools, the quality of neighborhoods. If you think about what's gone on in Baltimore, it's a place of tremendous concentrated poverty. People aren't really seeing a path forward and I think revitalizing places like that can have a huge impact, even in the face of globalization and changes in technology.

The data show we can do something about upward mobility. Every extra year of childhood spent in a better neighborhood seems to matter.

Cities that tend of have better schools for middle-income families, they tend to have much better prospects for kids moving up in the income distribution.