Install GoPro body cams for your public school child. With real time internet, the parent could have an immediate cell call to the school.
In my state, at the time, it was illegal to tape someone but not to videotape them.
Well we hired babysitter’s to take care our kids when they were little. We would set up a hidden video recorder on a timer. There was nothing to see but I would listen to the recording when I came home that night. Happily they were all boring.
If it was a choice between the law or my children, I’d protect my kids and the law be dammed.
Things are at the point where a body cam is almost mandatory.