Add Yahoo as a preferred source to see more of our stories on Google. Fifteen years after the calamitous rollout of the Common Core math standards, the once-derided strategy has proven its staying ...

Common Core math has sparked a great deal of contention across the country in the past few years. It has its supporters, those who say that it teaches students to better understand mathematical ...

Only Slate Plus members can gift Slate stories. Become a member to share 10 free articles a month. This story was produced by the Hechinger Report, a nonprofit, independent news organization focused ...