A fellow NACHI member was wanting to take the Indoor Environmental Standards Organization course, which I think is about the best course I ever took. Most other mold courses somewhat to totally sucked. The problem is, that course does not exist any more because ACAC took their education over, and discontinued the class. I still do not like ACAC as an organization.
My Industrial Hygienist talked to some people he knew and recommended this course. He knows the people teaching it and says they should do a really good job. Only $450 for three days and you do not have to join ACAC.
So if anybody wants to test the waters in mold, this appears to be a good course to start out with.