I few years ago I was trying to figure out my path as a writer so I took a couple courses at GWW - An intro to screen writing and a sketch writing class. Both had fun, interesting teachers (who no longer teach there) and the classes were a nice size. Not to big, not too small. We had assignments each week and a structured way of getting and giving feedback.
The Workshop seems like a great idea for a new writer or someone who has never studied a particular form before. However if you're thinking you're going to break into the industry through this school, you're going to be disappointed. This is for people who think they might one day want to be professional writers but who aren't 100% sure. But it's a fun way to spend a few hundred dollars and it will help you figure out what kind of writing you want to pursue.