I recently found an interesting course. It is through a professional orginization not a university and offers a certificate for GI/endoscopy technicians. Prices are not too bad, Entry level 160.00, advanced course 200.00. Associates and Technicians
I worked for the industry leader in GI for 13 years and everyone of our field people took the class (including me - the director). It is actually a well done class. I also took a 45 minute "root cause analysis" class from University of Florida and I think it was $20. It was really informative. I just can't find the link now.