No exam that I know of. I'm a photog. I dont know what kind of test I can take to prove that...
Thats why I have a demo tape. My pay now sucks. And I work weekends. And holidays. And I never see my wife. While not nearly as exciting...the state gig would be ALOT more money, 9-5 Monday through Friday and holidays off. Not to mention the state beni's.
That being said...I'd rather stay where I'm at...if I was monday through friday.