In early September, math teachers from across Kent County, Md., gathered for their first professional learning community meetings of the school year. Kris Hemstetter, a math and English/language arts ...

For five years, a San Francisco foundation funded, and a research organization closely monitored, a collaboration by 10 California districts to raise achievement under the Common Core math standards.

Over the last couple years, several parents have earned social media fame (intentionally or not) by posting math problems from their children’s schoolwork online. One father claimed that despite his ...