Mark Denman Elementary School first-grader Jeremiah Denson works on a fraction problem. Josie Scates, 7, from Bismarck-Henning, works on a math problem at the Danville District 118 First Grade Math ...

For 25 years, through four presidential administrations, U.S. schools could rely on one small truth: Math scores on the National Assessment of Educational Progress, or NAEP test, always went up. Not ...