I've (part-time, weekend/evening gigs) taught ASA basic keelboat so as to issue certificates, and have taught in an adult ed class on centerboarders out of a yacht club program using the USSA book, no certificates issued.
I do not have a teaching certificate from either one... but I do hold a 6th-issue 100-ton Aux. Sail license, and agree with a previous (long, old) post that there's no substitute for time on the water for all sailors, especially the instructors.
That said, it seems to me that ASA is slightly more cruising-oriented, and USSA more racing-oriented, which reflects the origin of each Association. The wise advice is similar to scuba instruction in my opinion, namely, "the instructor is more important than the certifying agency".
If I had a choice of schools (and you do, apparently), and I knew I wanted to end up racing, I'd probably pick USSA (again, depends on the instructor); if not, I'd toss a coin.
Last edited by nolatom; 09-10-2007 at 06:25 PM.