With only weeks remaining before many of those schools plan to send students home for the end of the semester, the findings raise concerns that communities around the U.S. could be exposed to new outbreaks. The data from more than 1,400 colleges were compiled by the College Crisis Initiative at Davidson College and analyzed by NPR. They show that more than 2 out of 3 colleges with in-person classes either have no clear testing plan or are testing only students who are at risk — mostly when they feel sick or have had contact with someone who has tested positive for the coronavirus.