There was an interesting article in yesterday's Boston Glob about how colleges and universities in the Boston area had really done a good job relating to Covid spread. A number of them contracted with the Broad Institute (my son's university in RI did this) and was able to test students for under $25 per test. Most schools were testing students and staff twice per week. This really squashed the cases. Some schools added a "covid fee", some used CARES act $ to pay for it, some used endowment $.
Public K-12 schools have zero $ to do this though...