This is absolutely false. An instructor may in fact state that they are an NRA instructor for credibility purposes, as long as they also make clear that the course IS NOT an NRA course.
Perhaps you should complain to the NRA about the poor quality course you took. That's the only way courses can be approved. Did you fill out the evaluation honestly? The evaluation is on the same page as the instructor application so you have to complete it. If you did so I assure you the Training Counselor that taught your course was contacted. $50 barley covers the course materials required for 2 days of instruction. You get what you pay for I guess.
I only have one slot left in my April 7 & 8 course for anyone interested.
It is suggested but not required that you take the NRA Basic Pistol Course BEFORE the instructor course so you can see how the entire course is presented.
Glad to see an Indy-area NRA TC advertising and conducting good NRA Instructor courses at reasonable prices. Keep up the great work!