The two lead Common Core math creators responded to an op-ed published in the Wall Street Journal we linked to a few days ago. That piece was written by renowned Berkeley math professor Marina Ratner.

Dr. Susan Berry of Breitbart has the story:

LEAD COMMON CORE MATH WRITERS DEFEND STANDARDS: ‘APPROPRIATELY RIGOROUS’

Writing at their blog, “I Support the Common Core,” lead Common Core math standards writers William McCallum and Jason Zimba claim that opponents of the education initiative have gotten the facts wrong on both the math standards themselves and their own comments about them.

Responding to an op-ed in The Wall Street Journal Tuesday by renowned Berkeley mathematician Marina Ratner, who states that Common Core will move the nation “even closer to the bottom in international ranking,” McCallum takes issue with Ratner’s characterization that he once indicated the new standards “would not be too high.”

Ratner, he says, “tries to make ‘not too high’ sound like ‘too low.’”

“The fact is, the standards are neither too low nor too high: they are just right [author’s emphasis],” writes McCallum. “The standards are appropriately rigorous and they will make American students—including those in California—more ready to compete and succeed.”