March 6, 2014 12:00 AM

Thursday letters: Common Core: The real story

In 2010, when I was state superintendent of education, then-Gov. Mark Sanford and I joined with the governors, chief state school officers and state boards of education of 45 states to sign on to a nationwide effort to improve the rigor of what we expect of students in mathematics and language. The confusing and irrational differences among states in their expectations was limiting our students’ ability to succeed and our nation’s ability to compete.

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