I agree that men are trainable. I found my high school annuals about a year ago, and discovered three of the four years (1953-1955) had at least one girl wearing a see-thru blouse for her class picture. My first reaction was that I'd never seen any girl dressed that way at high school, until I looked at the 1955 annual and found that one of the girls was one who was in my physics class that year, and I remembered seeing her wearing that very blouse. In the photo, she had a slip or a bra on under it, and probably also the rest of the time. I remember that from the back (she sat in front of me) there was a lot of skin showing under the blouse.
These days, of course, you couldn't get away with wearing something like that to school, but in those days high school girls and adult women bought clothes from the same racks, and high school girls were expected to dress as well as the women working and shopping in the better downtown stores (the high school was only half a mile from the center of town). Since see-thru blouses were accepted for adult women, including at work, in those days, they were also acceptable at school.
Looking at them now, 50 years later, my first reaction was: How did the girls get away with that? But, really, it was like Nat said. The men had been trained better in those days.