Model math standards produced by conservative education advocates helped spark a battle in South Dakota that could spread to other states.

A decade ago, a push to change the nation’s reading and math standards blew up into a ferocious, multiyear clash. Obama administration efforts to promote the Common Core State Standards via its Race ...

To briefly summarize Common Core, the decision to adopt the Common Core standards was left almost exclusively in the hands of the governors and the state boards of education. The public was not made ...