注意到这段话了吗？包括非法移民，不是高中的毕业率：）

“This article presents a list of U.S. states sorted by educational attainment for persons 25 years of age and older. This table is an estimation based on the responses to the American Community Survey. This survey is a large demographic survey collected throughout the year using mailed questionnaires, telephone interviews, and visits from Census Bureau field representatives to about 3.5 million household addresses annually, regardless of their legal immigration status. The survey does not measure graduation rates from a state's high schools, rather, it measures the percentage of adult residents with a high school diploma.“