Hmmm...the leather usually gets softer as you wear it. I used to wear bandaids on my Ach's heels 'cos I get blisters there.
Our principal doesn't really care as long as they're black and leathery *Nostalgia attack*...wear thicker socks?! But it's getting hotter, I know...bandaids are great though =)
Try them, but yes, how strict is ur school? Shop around really, use a hammer to soften the leather, it works =)