Originally Posted by Helmet Head
What determines a SCUBA, driver, or parenting instructor is competent?
In the case of SCUBA... you are evaluated by a team of at least 3 experienced instructors that test you in everything from "class room" presentation to "water skills," including emergency situations. They use the standard of "would I trust this potential instructor to teach a loved one."
If you don't win the confidence of the evaluation team, you don't teach.