As an instructor you are likely to be working towards the goal of becoming a Master Instructor or perhaps you're looking higher to Course Director Training.
In order to become a Master Instructor you must first have certified at least five Assistant Instructors. However, in order to teach the Assistant Instructor program you must be a Staff Instructor.
There are also many other benefits that result from being a Staff Instructor, not least of which is reducing burnout by increasing the number of different courses that you are able to teach.
On completion of the Staff Instructor course, you will be able to teach Assistant Instructor courses and most parts of an IDC.
There are two days of preparation before you audit an entire IDC to gain this certification. You'll find the two-day run up to the IDC itself both challenging and rewarding. There's a chance to brush up your own demonstration and teaching skills as well as time to learn about scoring and critiquing instructor candidates.