OECD researchers estimate that a quarter of the total variation in math performance across countries could be explained by the differences in overall math anxiety in each country.

In fact, in some places, like Tunisia, girls showed more variation than boys. If greater variation in math abilities were biologically innate, then it would have shown up everywhere.

There’s variation in math scores across grade levels because “math skills are relentlessly progressive, meaning that the skills build on each other,” said Kelley Scholl, the city’s ...

In a study appearing in the Feb. 16 Early Edition of the Proceedings of the National Academy of Sciences, Harvard researchers demonstrated that simple changes in beak length and depth can explain ...

Metro Atlanta students’ success on the state’s mandatory reading test didn’t change much from last year, but there was wide variation in math results, according to the latest results on the ...