With regard to measuring one’s skills, I think it’s important for everyone to benchmark where you are and try to improve that continuously. For an instructor, it’s doubly important.

There are a lot of different benchmarks you can use, just having one is the important thing. Shoot it periodically and try to get better at it. You may find that the benchmark you use changes over time to something more challenging and that you have multiple benchmarks that measure different aspects of shooting.

One of the main advantages of shooting in competition is that you find out you’re not as good as you think you are. Ego is the Achilles heel of many shooters and instructors.

Claude Werner, A tactical instructor that makes sense.
http://tacticalprofessor.wordpress.com/2014/11/24/36280/