看来是以录取率排名，加上SAT/ACT

What is the hardest college to get into for 2019?

Niche compiled this list by considering U.S. Department of Education data, SAT and ACT scores of applicants, as well as acceptance rates. To arrive at these rankings, acceptance rates are weighted at 60 percent and SAT/ACT scores are weighted at 40 percent. So you'll see that some higher-ranking schools may have higher acceptance rates; those schools have higher bars for test scores.