Carol Burris and I wrote “An Open Letter to Joe Biden,” which was published by Valerie Strauss on her blog “The Answer Sheet” at the Washington Post.

Valerie Strauss begins:

During the Obama administration, public school advocates led by Diane Ravitch opposed the education agenda of Education Secretary Arne Duncan, who had embraced standardized testing, charter schools and the Common Core State Standards as the way to improve America’s schools.
Ravitch, an education historian and research professor at New York University, became the titular leader of the grass-roots movement against the privatization of public education in 2010, when she published her best-selling book, “The Death and Life of the Great American School System.” It detailed her conversion from a No Child Left Behind supporter to an opponent.

From 1991 to 1993, Ravitch served as assistant secretary of research and improvement in the Education Department under President George H.W…