Re: Fly fishing for school credit?
University of Idaho has a fly tying class, pretty basic class just show up and learn how to tie flies. I believe there may be a little 2 credit casting class but it is no more than walking out on the Admin lawn and learning to cast.
Now, someone correct me if I am wrong but one of the Universities in Oregon has a very respected fly fishing and fly tying offering.
"A good cast is like a good whiskey- It's smooth and hits the spot" -Anonymous fly fishing guide