Common sense tells me that casino courses can not be taught in countries where it is restricted because the answer is simple, why teach something that can't be practiced in your country. I don't know if in countries that doesn't restrict gambling whether casino management courses are specifically being taught there. What I know is that there are management courses like business administration and public administration where students learn about management generally and their skills can apply in different industries. I'm thinking that casinos hire based on different areas of skills like customer service, security, advertisements and the rest, they'll most probably hire people with casino experiences