I received a brochure from a university that has an advanced certification program that requires only 5 courses to become a diagnostician. I have some questions: 1. Is it worth it? I know that most diagnosticians around my area can make great money at it. 2. Are they really in demand as I've heard they are? I know there have been a couple of postings in my district that have gone unfilled for awhile. 3. What exactly is the job of a diagnostician? Thanks guys!