这里摘录两个重点:1)除掉录取率(acceptance rate),2)加上Social Mobility。
New for 2019, acceptance rate (1.25 percent in last year's ranking) has been completely removed from the ranking calculations to make room for the new social mobility indicators.
Also, we reduced the weight of the two remaining student excellence factors assessing the fall 2017 entering class – standardized tests and high school class standing.
Social mobility: New this year, we factored a school's success at promoting social mobility by graduating students who received federal Pell Grants (those typically coming from households whose family incomes are less than $50,000 annually, though most Pell Grant money goes to students with a total family income below $20,000).
https://www.usnews.com/education/best-colleges/articles/how-us-news-calculated-the-rankings