Diane Ravitch is on the liberal-agnostic end of the spectrum regarding the place and function of education, but recently she has begun to criticize standard left-agnostic statist solutions (primarily Common Core) for fixing education. In this interview (YouTube video below), she identifies poverty as the single most compelling reason for failure in American education, though it is probably parental involvement, which is linked to poverty.
Aside from the accuracy of her diagnosis about the etiology of failing American education, Ravitch is right on target in her criticism of testing in America. Standardized testing has become a kind of idolatrous goal for many bureaucrats, and standardized testing is now driving American education.
The Center, in contrast to the narrow, surface-level, informational conception of education, values exploration of the big, beautiful ideas that shaped the Western tradition and values confrontation with a wide variety of perspectives on the meaning of life. This is real education, not box checking or learning to spit back the progressivist-flattering bromides that infest modern media and government.
Ravitch knows something is wrong with American education, and she rightly says that more and more testing is not the answer. Creativity and exploration have been key features of American learning in the past, even when test scores were low. The Center wants to keep this part of the American, and Western, attitude toward learning alive.