I was in Catholic School,in the 60’s, in 5th grade, when the girls started changing in shape. There was a well believed rumor, that a girl could get pregnant, from sitting next to a boy, on the school bus ;)
Another rumor had it that girls’ black patent leather shoes reflected upward.
I was in Catholic grade school in the 1950s and early 1960s. At my school there were no buses: We all walked to school, rode our bikes to school, or our parents drove us to school.
“There was a well believed rumor, that a girl could get pregnant, from sitting next to a boy, on the school bus ;)”
Also in Catholic school, the nuns told us that if we wore patent leather shoes, the boys could see up our dresses.