This article from FreedomWorks is an interesting perspective on Common Core and freedom generally.  Here is an excerpt:

We all truly believed in Mao and Communism because we were completely indoctrinated and did not have any other information. We had nationalized curriculum and tests, one of the subjects we had to study was Politics (Communist Party’s history, Karl Marxism, Mao Zedong Thought, etc.). Our teachers had to comply with all the curriculum and testing requirements, or lose their jobs forever. Parents had no choice at all when it came to what we learned in school.

She worries that the increasing centralization of public education and the blind acceptance of data collection by the U.S. government will lead to an all-too-familiar suppression of liberty and individualism.