For what it’s worth, I have 25+ years experience as an urban public school teacher. I HATE Common Core. The standards it promotes is bad. And federal intervention in local issues is in itself wrong.
My point on this thread was more general. Employees should have the right to speak out as private citizens. But employers should have some rights too.
A school district is not the same as a private employer protecting a brand. A school district serves the citizen taxpayers. They are not a commercial brand, they are a government service. The teachers working within that system are honor bound to speak their minds when they see something is seriously wrong.
What subjects do you teach, pray tell?