I DID hear this version of the story in public school but I graduated from high school in 1958.
Exactly. But that was before the 60's radicals took over in a big way.
Today's schools and university campuses are filled with those who have been indoctrinated by Marcusian Marxist professors, specifically.
You can recognize them by how they justify their attempts at silencing those with whom they disagree. Herbert Marcuse is where they get their convoluted fascistic ideas about "tolerance" and set themselves up as the ones who get to define what the word "repressive" means (as in: "it all depends on what the meaning of 'is' is"):
In Herbert Marcuse's 1965 essay "Repressive Tolerance", Marcuse argues that genuine tolerance does not tolerate support for repression, since doing so ensures that marginalized voices will remain unheard. He characterizes tolerance of repressive speech as "inauthentic." Instead, he advocates a discriminating tolerance that does not allow repressive intolerance to be voiced.
Google: Herbert Marcuse / Frankfurt School