I just received my approval to take the Ohio Electrical Contractor exam, I'm currently a licensed Michigan contractor. That notice was followed up the next day by a solicitation by the North American Contractors Association with a myriad of study courses and practice exams ranging in price from $75.00 to $400.00. It's been about 25 years since I took the Michigan exam so I'm a little apprehensive.

Are these classes any good, or necessary for that matter?

Thanks,
Joe