When I was in "junior high" in a bicycle-friendly country, the school next to ours was a really conservative school and the girls were not allowed to wear slacks. Many of them cycled to school in slacks (and often rain pants too) so they wouldn't freeze, and would pop into the bicycle cellar in our school to change into the required skirts before heading over to their own school. Seeing the picture you posted reminded me of those long-ago days!