An interesting study on the price some people are prepared to pay to live alongside people like them:
Specifically, while all households prefer to live in higher-income neighborhoods, college-educated households are willing to pay $58 more per month than those without a college degree to live in a neighborhood that has 10 percent more college-educated households. In fact, the researchers find that households without a college degree would actually need compensating to live in a neighborhood with 10 percent more college-educated neighbors.
Similarly, blacks are willing to pay $98 more per month to live in a neighborhood that has 10 percent more black households, compared to a negative willingness to pay on the part of white households to live in a similar neighborhood. Perhaps unsurprisingly, increases in household income and education also lead to a greater willingness to pay for better schools.