Re: HEELS and sore feet!
i think everyday it's a bad idea. your body is trying to protect itself with the calluses, you can keep pedicuring them off but after years pass, you might get bunions or misshapen feet. im assuming you wear heels 40 hours/week...why not try wedges or platforms? or even flats? your outfit doesnt need to be total glam until the evening :)
You work in a school and wear heels to work everyday? 
Re: HEELS and sore feet!
Take good care of your feet... rub them with foot rub and then soak in arm water for 5/10 minutes. Do this once or twice a week. Use petroleum jelly on cracked heels overnight.
When you wear heels get some Scholls foot pads - they're great!
Don't wear heels all the time - give your feet a rest every now and then.
Wear different kinds of heels (kitten, pointy heel, wedges etc)