A small number of schools are closing. Remember my earlier postings. When the number decreases to a certain point, the amount of tax dollars is not enough (per student daily census) to offset the operating costs. In addition, it's a public health issue of contagion spreading.

16% of the students missed due to sickness and a 27% of teachers in Troy Idaho.
[link to www.krem.com]

You'll begin to see these happening with more and more frequency if the epidemic worsens. So far it hasn't been a lot, but as a good critical thinker you should be vigilant for YOUR AREA. That's usually a function of population density.