You can look for other VSM classes at M4carbine.net, they have a dedicated sub-forum for
VSM class announcements.
The NRA Basic class will mostly cover care & maintenance and safety. There is a small amount of shooting, and it is definitely worthwhile to have one under your belt if you do not already have
formal training in those areas. But if you're at the point where you need to improve your marksmanship fundamentals, VSM would be my first suggestion.
Barring that, you could find out if any of the NRA instructors in your area teach more advanced classes.
(also, moving this thread to the Practice section; "Class Announcements" is only for announcing classes)