If this crap happens, I would simply advise people to do what they can to lay low.
It starts by NEVER having contact with their public schools - the people who get in trouble the most are those who get angry with the way their public schools are treating their kids and pull them out. For those people, it’s very possible that the schools will not let go of their kids and will have CPS cases opened on them. Rather than waiting for that to happen (which it will), simply DO NOT ENROLL THEM in the first place.
If it’s too late for that, then move to a nearby town (during the early summer), choose a private school that’s 20 or so miles away, and claim that your kids go there. Most people will stop at that, but obviously tell your kids to also claim to go to that school, should they be asked. For this scenario, be sure to tell the original public school that you’re moving out of state, that way they are less likely to any attempt to contact the schools in your new town (or even bother you again) - and obviously don’t tell the schools in your new town anything - if they don’t know you’re there, they have nothing to investigate.
At that point, you have to be somewhat careful not to attract attention, with that being most likely if your kids are in public during school hours (or visible to neighbors) - so avoid that as much as possible.
It sucks, but these are the types of steps we need to get prepared to do as this country gets ‘transformed’.
No, if this happens go to court and hopefully to the SCOTUS to strike down this unconstitutional overreach. Then after it's struck down, sue the government, school districts, individuals who perpetuated this damned violation of rights - into oblivion.