“Are you advocating for kids being sent to public or open-modern schools with no supervision?”
Please indicate where I imply this. Your quote above it was your excuse for removing your kids, not my assessment of the situation.
“Ok, I guess I can wait until he grows into his 20s, and then, I can talk with him as an adult and train him into better thinking.”
If your kid has one teacher in 5th grade with good middos but intolerance and that is how she has chosen 20 years later to fashion herself after than you have some serious parenting issues here. I believe that is what they call a strawman argument.