@MrsPeterEvans Through kintergarden and my first nine years, it was always skirts only. Then, when I hit 10th grade, girls were allowed to wear slacks and both sexes were able to wear jeans.
@MrsPeterEvans The Catholic school where the kids went in the 1960's and through today give the girls a choice, depending on the weather. They were allowed to wear uniform skirts or brown slacks. Pants are easier on the knees when the girls play as roughly an any boy does.
@MrsPeterEvans My youngest brother is a playground monitor during the school year for our parish church. He reports he sees both sexes run and fall at lunch and recess, and many girls get up after a fall with scraped and sometimes bleeding knees. But he is not allowed to touch any kid who is hurt; they have to go to the office.
@MrsPeterEvans Nice only problem with tights ladder so easily . I was told the way to stop ladders was a dab of nail varnish stopped it going any further .
@MrsPeterEvans Not me. If I wore pantyhose back then (which I did) I never had them in this condition - mine lasted for weeks at a time. If they developed runs, I wore slacks over them.