I too was brought up with knee length skirts/dresses for church or longer and nothing else. Men were to wear suits with ties; sports jackets were frowned upon. Shorts or jeans were a HUGE no no even for children, who were expected to be dressed up like the adults. We were taught it shows respect and reverence.
You have to keep in mind, though, that today’s single dad on “visitation” is not allowed to correct his children in any way shape or form, otherwise mom, who 9 times out of 10 becomes the FRIEND of her children after the divorce, will call CPS on dad.