Big 10 Coming back, Mtn West pushing, Boise St furloughs my daughter, a college junior, caught Covid-19 from an asymptomatic, apparently healthy young woman. Between four and six of their mutual friends were infected by the same person. My daughter's contact was at dinner outside at a local restaurant. The rest of our family was quarantined for two weeks after the health department contacted her to inform her she had been in contact with someone who tested positive.
We had breakfast together the day before she was contacted. By the time she went for her test she was running a 101 degree fever. Two days later she got her positive result. I had gone to work the next day and was in contact with numerous people. Fortunately I did not get it and infect my colleagues.
She was fortunate to have a mild case, but she is still recovering and about a month later still tires easily. While not as fit as she was when she ran cross country and track as a college freshman, she is normally a healthy young woman who is not in any 'danger' groups.
That's why you would test everyone. The University of Idaho has come up with an in-house testing system but it isn't testing weekly. Students had to get tested upon their return to campus in order to attend in-person classes.