What’s the problem here? She publicly insults the school on her feed, she tags them on the post in a way that can easily be construed as taunting them, and then she’s surprised when they tell her to take her kid somewhere else? They’re a private entity - they can choose who schools there and who doesn’t. End of story.
“Customer feedback, how can I help you?”
“My child said that ...”
“Is this a complaint or praise? Because our policy clearly states that complaints will get you booted from our service”
“What?”
“It’s the new wave, every airline, phone and cable company will soon have the same policy, it’s like a miracle!”