Is that important?
Yes. It would be foolish to shut down the schools over a false positive test. In the long run it may turn out to be a very bad decision to effectively shut down the public school system to avoid a small risk for the students. Or it may turn out to be the cause of a sea change in how children are educated in America.
If students can't attend school in person anymore due to COVID-19 risks then everyone will be homeschooling across our entire nation. There will be no more public schools offering in person instruction. That's a big change for society.
“then everyone will be homeschooling across our entire nation.”
Homeschooling with “help”.
Do not negate the contribution of remote learning over the net.
Nothing will stop the smart and curious from learning except the absence of information. The average student will get some value from the structured presentation of information, and additional value from one-on-one sessions with the teacher.
As for the dumb kids, they’re screwed.
But they always were.