The country is segregating by education, as people with college degrees cluster in some communities and not others. The areas of the rural America where high percentages of adults hold B.A. degrees have higher incomes and lower unemployment than do those places with less educated populations.
Not only is the rural/urban divide growing, the gap between those with college degrees and those without them is increasing. It highlights the importance of staying in school.
Although you have to wonder, how did college educated people misspell Degree in the map title? I guess they’re math whizzes.