I was taught how to change a tire once. However, I don't want to change my own tire. I just call some nice man to come fix it for me.
Same goes with mowing the yard, changing the oil in my car.... you know.... the manly jobs.
While every point of socialization (schools, churches, friends, family, etc) can and does teach gender roles...it always has. A parent can help kids understand what the hell these "expectations are"...or aren't. And that's not to say that some parents teach girls that there are girl things to learn and do....and boy things to learn and do. They usually will define many of those things as they display their lives in their usual role modelling experiences. But in the end...parents can help kids understand that gender roles exist, what they mean and how social expectations can affect their lives.
Yeah...I know, that's not the normal conversation parents have with kids....but like sex, a lot of parents don't talk about it. But parents need to talk about. Gender role confusions....or expectations can mess a kid up.
There are really valid reasons people need to think hard and long about the types of values, beliefs, etc that they expect other people to teach their kids.
Sure we can teach kids about traditional gender roles. They're important in a cultural and historical context. But by no means should we teach kids that they are somehow superior or default behavior.
Liberté. Égalité. Fraternité.