The govt comes up with the "common core" curriculum which homogenizes the message across all school districts. This includes a social agenda disguised as literature.
The teachers and administrators have been groomed for decades now to accept liberal bias not only as "correct" but as the only approaceh.
Parents and students have been groomed to accept teachers as a selfless benevolent group who are masters of their subject matter and have the students' best interests in mind, always.
Don't flame me, I am a retired teacher.
Tearing Up the Fabric of a Free Society: The New College, Career and Civic Life (C3) Framework
Posted on November 25, 2012
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I did not say impair. I did not say damage. I said Tear Up. Why such a dramatic statement? Because the week AFTER Obama was reelected (Nov 12) and then quietly put out more publicly during a holiday week, the CCSSO (Council of Chief State School Officers, the heads of State Departments of Ed which is funded by many of the same businesses who benefit from its edicts including many tech companies and the accreditor AdvancED) issued a Framework that appears designed to create Homo Sovieticus right here in the USA. Seriously. Taking the political theories developed in the USSR to change mindsets there and making them the required perceptual “lenses” for students to confront daily life here going forward. Treating long-held aspirational visions of collectivist decision-making as established “evidence-based” fact. Treating metaphors like BEST, Bronfenbrenner Ecological Systems Thinking, as factual descriptions of how the world works. Oh. My. Goodness. So yes, I stand by the words “Tear Up the Social Fabric.”
http://www.invisibleserfscollar.com/category/common-core/