Should we take it to extremes and have everyone wear a sheet with two holes for eyes so nobody is "distracted"? Otherwise how do you know that something won't be distracting? Oh no, one kid is wearing a somewhat shiny watch--distraction imminent! Doom!

By the time kids hit high school, they're capable of not being distracted by others' attire and on occasion if they are, there's fortunately a teacher there to remind them to focus.

I recall being distracted a few times but I also didn't want to get in trouble or, you know, fail. And I have ADHD that wasn't diagnosed at the time. If someone is so easily distracted many schools will help the kid out (not like when I was growing up).

For example, my kid was distracted by noise when younger so she wore sound cancelling headphones. Now she can focus well enough without them.

Nobody is advocating for "anything goes." Some guidelines around basic decency are fine if it applies equally to boys and girls.