Sigma, I can't answer your question directly, but I am signed up to take the NRA Certified Pistol Instructor Course in August. I want it because after looking in my area, I found no one who offers classes. I intend to offer pistol classes. It's a 3 day course and I hope it's high quality. I spent 21 years in the army, 15 of those in the Infantry. So I'll know if it's a waste of time.
I hope it's great and then I'll offer classes in my area. Best of luck to you!
RetiredMajor, NRA Certified Instructor
Every day's a holiday and every meal's a feast!