“Yet the most astounding statement I have read is the claim that Common Core standards are ‘internationally benchmarked.’ They are not. The Common Core fails any comparison with the standards of high-achieving countries, just as they fail compared to the old California standards. They are lower in the total scope of learned material, in the depth and rigor of the treatment of mathematical subjects, and in the delayed and often inconsistent and incoherent introductions of mathematical concepts and skills.”
MARINA RATNER, professor emerita of mathematics at the University of California at Berkeley. She was awarded the international Ostrowski Prize in 1993 and received the John J. Carty award from the National Academy of Sciences, of which she is a member, in 1994.