@All shorts are OK: If parents would still teacher their sons and daughters how to sit properly in any clothing I'd be all for shorts. You can't go anywhere anymore without seeing girls and boys with shorts on with their legs spread wide open. Both are showing underwear and body parts that they shouldn't be.
Girls were required to wear dresses or skirts until I was a sophomore in high school (yes - I'll be a senior citizen in a couple of months). I was so glad that we were required wear dresses to school. I graduated and went straight to a great job and didn't have to purchase any new clothes or shoes.