As someone with first hand knowledge of the WDWCP, it is a wonderful experience if 1) You've always wanted to work for Disney 2) Want a semester off from school 3) Enjoy watching the Real World on MTV (Cause You're gonna live it)
As far as classes while you're here... they continue to restructure the program every semester... what used to be required courses are no longer availble, and fewer and fewer colleges and universities offer credit. Why you may ask... try to fit in classes, when all the kids are working 40+ hours.
Money, well your not going to make any... unless you work constantly, and you're not going to want to do that... there is to much to do here in Central Florida... and you'll meet many people from around the country you'll want to hang with. Especually since all of you have some of the benefits of being a WDW Cast Member... Merchandise and Food Discounts, Admission into the parks, etc.
My best advice... bring a car... not only will you be able to travel across property, but it will eliminate the need to use the shuttles (which are unlike Disney Transportation - reliable).
Finally, stay away from the extra classes... you're not gonna want to get up at 6am after working a 12hour shift in strollers at the Magic Kingdom, or a night at Pleasure Island... come for the fun and comraderie... you'll be joining a very large fraternity... the fraternal order of past WDWCP Alumni.
So if you're interested come down, but don't worry about school... the one thing you'll walk away with is an experience unlike any other, sure there are good and bad things, but it is truley unforgettable. Maybe I'll see you when your down here... just look for me at the housing events... I'll be the guy with the microphone.