For nearly 20 years, Dolores Acevedo-Garcia has been collecting data on the access-and lack thereof-that children in neighborhoods across the U.S. have to necessities like healthy food and a good education. She and her team ... manage diversitydatakids.org, a data project designed to guide the high-level policy decisions that affect childhood and equality. In January, Acevedo-Garcia and her team published the latest edition of the Child Opportunity Index, an ambitious project that takes a deep look at 47,000 neighborhoods across the 100 largest U.S. metro areas, scoring them from 1 to 100, where a higher number means more childhood opportunity based on 29 key measures. Many of the more diverse metro areas in the U.S., especially cities with large black populations, have enormous opportunity gaps; the few diverse cities with small gaps tend to have low opportunity scores overall. "It's hard to find a place that is equitable and racially diverse," says Acevedo-Garcia. In all 100 metro areas ... combined, white children live in neighborhoods with a median score of 73, compared with neighborhood scores of 72 for Asian children, 33 for Hispanic children and 24 for black children. Black and Hispanic kids live with less opportunity than their white and Asian peers almost without exception. Milwaukee and its surrounding area has the widest racial disparity in the U.S.. A white child there lives ... with a median opportunity score of 85. For a black child, the median neighborhood score is 6.