Earlier quoted context omitted.
I don't understand why people care so much whether preferences are biological or cultural. (Well, I understand it if we assume they are being dishonest, so assuming that something is not biological allows them to claim that it can be changed to whatever they think is morally superior. The debate whether being gay is cultural is a good example.) If I am given a true freedom to choose, to decide according to my prefere…
It honestly changes the way we work with something. Biological differences aren't things we can easily change right now. Skin color or the shape of one's fingernails or the length of one's legs. Some biological things have real world things that go with it. Skin color, for example, could put you at greater risk of skin cancer or a greater risk of low vitamin D. One simply accepts and lives with these things and works…
I am not really sure I buy into "treating boys and girls the same" either. I think what's more important is to give them options (perhaps against their will, to get them outside the comfort zone).
It seems to me that schools already largely do treat everybody the same, even to the point where it is being truly annoying to open-minded individuals. I am not sure it's ideal to treat all kids the same, but rather recognize their individual differences.
For example, my parents sent me to summer camps to learn some outdoor skills. I wasn't very good at it and I didn't enjoyed it as much as I probably should as a stereotypical male. But on the other hand, I think it was right thing to do.
So, if despite these attempts to make me into an expert in wilderness survival, I didn't become one, and rather became computer geek, which was certainly out of fashion at the time, I have serious doubts about the theories that cultural ideas are so influential to the actual behavior of children.