I see Zippz point about creating NRA instructors and while I get it from the NRA standpoint, it is indeed a shame that you must take the NRA basic pistol course first.
As for the NRA instructor course, it is extremely basic especially on the civilian side and even the NRALE side is very basic. But the NRA is nationally recognized and understood. Unfortunately I don't put much weight on someone who says that they are an NRA instructor for reasons that don't need much explanation. I don't automatically discount them, but if that is their only formal training as an instructor, I definitely need to see more out of them first.
I also understand why people don't teach sanctioned NRA courses and I don't do it either. As an individual's training, experience, and professional development progress, it is difficult and not "in good faith" to teach things that one does not agree with on a professional level.