Hi OC.
I'm currently in Miami, studying for my FAA Dispatch license here, and my god, this is hard work! I'm at the Sheffield School of Aeronautics, which by all accounts, is one of the best. They specialise in the Dispatch license and are contracted to a lot of airlines around the world including KLM, Delta and China Airlines. One of the main reasons for this is that they not only teach you for the purpose of the license, but they also prepare you for the actual job as well ( which is a lot different to our definition of Dispatcher in the UK ).
As a non-American, a lot of this is useless to me, and the course costs quite a bit more than at other schools. In reality, there are a lot of jobs over here ( students of the school get priority interviews for many of them ), however I'm yet to hear of one which will even give international candidates an interview. The opportunities in Europe are limited, however more and more airlines are training their staff in preperation for JAR-OPS, showing that the tide is changing, albeit slowly. The best bet seems to be corporate/specialist airlines or else the Middle East carriers are big fans of the qualification.
Having been here for the past month and experiencing the general feeling towards international students, my advise to you would be to put the thought of getting a job here after graduation right out of your mind. Short of a massive shortage of trained staff, I can't envisage it happening. In terms of a school, I probably wouldn't recommend this particular one to a non-American. The training and practical skills are second to non, but are specific to American, domestic operations. You're much better off going to a standard school, saving some money and lightening the workload. Put it this way, I'm whiter than when I first got here, and it's the high 70's most days!!!
It definetely is a brilliant course and as someone from the European industry, it has shown me a whole new aspect of our job. The qualification is a fantastic thing to have and I'm sure it will lead onto bigger things, but not immediately. As a non-American, I'll just have to wait for the rest of the aviation world to catch up!!
Good luck!