Boffins: boys and girls naturally act differently
Gender is a grammatical term; sex is innate which is why I never say the first when I mean the second

Modern kindergarten classrooms are toxic to boys’ academic performance.

A five-year-old boy has trouble sitting still. Go figure.

There are people where I work who insist that all differences between boys and girls are socially imposed. Of course, those folks don’t have any kids.

From Midwest Catholic Dad.