Depends on the class - probably not one on ruler work...
I've taken several that dealt with design and how to flow from one element to another. I think that type would be fine. I've also taken several that were very specific - and many that dealt with the computerized design software, those probably would not be helpful.
I'd love to go the the DesMoines show - but it's the weekend before we head to GA for two weeks, so that would be a bit much.