Re: Fly fishing for school credit?
There is a NOLS course involving fly fishing, don't some schools offer credit for NOLS?
It could be a good summer course incorporating a number of disciplines. Sort of like colleges that send students overseas with professors from history, archeology, sociology, biblical studies, econ, etc etc. Fly fishing doesn't seem to be the best way to teach any of the disciplines mentioned in the initial question, but it could be a good way to integrate what is learned in the classroom in a creative, interdisciplinary way.