School might be but life generally is very favorable to traditionally masculine characteristics.

Life favors thinking and creative problem solving, school favors regurgitation and submission to authority.

As an example my son doesn't do to well in math, however, he's been multiplying/dividing since Kindergarten. My daughter at least appears weaker (I think she's hiding her skills) but does much better on math at school.

Don't pay too much attention to statistics, bring your concerns to your administrators. They have a lot of work to do and don't need parents making complaints and creating extra work.