Where Can I Learn Foley?

There are no foley schools but I'm sure you can pay a foley artist to teach you to walk around in dirt or get 2 half coconuts and do horse footsteps, some post production sound courses like at the SSR in London/Manchester do foley as a small part of the course. The best way is to practice yourself at home and then you can work on sound proofing a mini studio and get short films to work and practice on.

Like any creative areas you need practice to make perfect :)