I would change the question "do you have what it takes to be an excellent or great
IICRC instructor." The biggest impediment is what is unseen. Do you have what it takes to live on the road? It is fun at first, but it gets old fast. I did not sleep well as the different bed, pillows, time zones,etc. I did not teach
IICRC, but taught an introduction to oriental rug cleaning and leather cleaning from 1996 to 2002 all over the country. I missed a lot of my kid's sporting events and other good times. Understanding the material is the easiest part of the job. Do you have the ability to keep it simple and to keep it interesting? In those days were had not yet entered the day of short sound bites where anything over 5 minutes is too long. I am not sure if I could keep everyone's attention today.
Achieving excellence in teaching is a gift which many do not possess. For well over a decade I presented with Gordon Hanks at our annual distributor conference. To the chagrin of many of our co-presenters it was the highlight of the conference. At one of the conferences I presented with someone else and not Gordon. It fell flat, which taught me that the gift of presenting was with Gordon and not myself. The gift that I had was the opportunity to present with someone who was truly gifted, Gordon Hanks.
My point is that it is not as easy as it seems to be an excellent or great instructor. Also it is a much harder job than you realize. Kudos to those who put up with all of the other unseen hassles to be available to teach
IICRC classes.