Gender and academic achievement meta-analysis

On average, girls outperform boys across all subjects in school, including math and science, according to a recent meta-analysis. The largest performance gap was in language, and the smallest occurred in math, the analysis found. "This contrast in findings makes it clear that the generalized nature of the female advantage in school marks contradicts the popular stereotypes that females excel in language whereas males excel in math and science," the researchers wrote.
Voyer, D., & S. (2014). Gender differences in scholastic achievement: A meta-analysis. American Psychological Bulletin, 140(4), 1174-1204.
http://www.apa.org/pubs/journals/releases/bul-a0036620.pdf