Hello Intutude,
Great question........
Are you just starting your coursework?
I'm not sure there are any options at all for student loans for appraisal courses per se, as I was always under the impression that these loans were reserved for accredited, post-secondary education (as in, 'college'). If there is a college near you that offers appraisal courses and / or a real estate appraisal degree program (my understanding is that there are some out there), my first phone call would be to them.
You could also call a local chapter of one of the larger appraisal organizations, like the Appraisal Institute, NAIFA, ASA and others to see if student loans are offered by anyone, anywhere for appraisal course work. They could probably tell you instantly if any exist.
The other option, of course, is to take the courses one at a time while you are working in another field. I have found the cost of most of the individual courses to be reasonable, and usually affordable. I think you'll find that this is how most appraisers got their appraisal education. Others will chime in with their experiences as well....stay tuned.
Good luck in your quest!