The latest results from the National Assessment of Educational Progress just painted a dismal picture of math performance in America’s schools, continuing to show more than a decade of stagnation.

CHICAGO (AP) — In July, in a packed classroom in downtown Chicago, a group composed mostly of early elementary teachers and child care workers read a story about “Wendi,” a fictional preschool teacher ...

The vast majority of students won’t take algebra until middle or high school. But teachers can start laying the groundwork for this pivotal class a lot sooner, some researchers say—and instilling ...