Oh no, I totally get it. The rules aren't made by the schools. And you're right, they're following them. We'll disagree on the working well part. I believe the quarantine rules that schools have to follow are too much. It is far too much of a disruption to the educational process.
Here's a scenario...Jenny heard from a friend of a friend that someone in her class that was quarantined was actually positive. Jenny gets tested on Monday. Goes to school on Tuesday and Wednesday. Gets results Wednesday night that she's positive. She never showed a symptom, but was "exposed". That's why she went to school Tuesday and Wednesday. But Jenny has one of THOSE moms that just had to know if she was positive or not. So now, Jenny is quarantined for 10 days. Along with ANYONE that she exposed, tracing back to 24 hours prior to her positive test. Jenny has siblings in school, but they have not tested positive. Anyone Jenny came in contact with is out for 14 days. Jenny's siblings are out for 24 days. You know what gets them back sooner? A positive test result. There goes the snowball.
Orrrrrrr...Jenny's mom remembers her Xanax that day, and decides to not have Jenny tested. Jenny goes to school, never shows a symptom, and her educational process...and that of potentially dozens of others...isn't interrupted.
Both are plausible. Both happen. The results are the same. If we're in school, we need to be in school. The CDC and the health depts need to back off.