Girls surpass boys in reading, writing, civics and the arts. Girls get better grades and more honors; they have higher aspirations, are more engaged in school and are more likely to graduate from high school and college. Boys, on the other hand, are more likely to be suspended or expelled, need special education, smoke, drink and do drugs, repeat a grade, commit suicide, become incarcerated, leave school without attaining literacy, drop out of school or be unemployed. Marginal advantages in math and science for boys pale compared to the sheer advantage girls enjoy throughout school. (pg. 1.)
The entire paper is available here. Undoubtedly it is required reading if you teach at the K-12 level.