On the women only classes, don't assume that all women find that to be the best route. My wife cannot understand why someone would want to learn in a segregated environment and just the add in Sailing Mag bothers her. So to say that women learn better from women as a truism. Not all women agree. Nor do all men want male instructors. Again, not always true. We tend to want the most qualified instructor that is able to teach to our learning styles, vs the one with matching genitalia.
No one said that ALL women want to learn in women-only classes. I would guess, however, that those who do are the ones who sign up for them. Speaking for myself, I was just presenting an argument for their existence. It wasn't something I even considered when I took instruction in: white water kayaking, scuba (to rescue diver), sailing, and any of the other interests I had, I just did it. But, as an instructor, I just want people to learn. However that happens is a good thing. If being in a single-gender class enables them to learn the rules of the road, who cares and what right does anyone else have to judge them for it?
Having said that; my daughter was told yesterday in kindergarden that Batman was for boys and why did she have a Batman lunchbox (her pick not ours). ...
I'm 46. I still have the Yellow Submarine lunchbox I carried in elementary school. Someone told me it's worth about $300 now. And I couldn't stand Barbie. Mom used to buy them for me and I'd chuck them out the car window onto the train tracks. Now, my lime green Tonka truck that matched my lime green Easy Bake Oven, loved 'em.