USA Today reports on new research published in the journal Science:
[Janet] Hyde and her colleagues [at the U. of Wisconsin] looked at annual math tests required by the No Child Left Behind education law in 2002. Ten states provided enough statistical information to review test scores by gender, allowing researchers to compare the performances of more than 7 million children.
The researchers found no difference in the scores of boys versus girls — not even in high school. Studies 20 years ago showed girls and boys did equally well on math in elementary school, but girls fell behind in high school.