how effective do you think such an organization could be?
For example, the first job I worked at the age of 14-15 was below 'minimum wage' in my area and thus could be called an 'illegal sweatshop' but realistically, considering my background and options (I had no immediate financial need to work; this was my 'foot in the door') it was just some kid getting some experience.
The thing is, I didn't go to school. (I mean, I went to highschool, but that's little more than babysitting. I didn't go to college) If you want to get a job that requires a degree without having that degree, you need to do that job for a smaller company that is paying you way below market rates before you can do that job at market rates. It's the way it works, and it worked out fine for me. I ended up making more than anyone I grew up with.
I'm not saying that my situation compares with that of the Chineese teens; I'm just saying, you need to be careful to define sweatshop in a way that would protect those who need protecting, without getting in the way of those who don't. My stepmother made me quit my first job after she found out that not only were they paying me under the table, they didn't have workman's comp. I was being "exploited." I mean, I was being exploited. But it was a hugely positive experience with me. The shady computer repair place sold me discounted used computer parts for years to come, and I was able to get a (legal, minimum wage, with school credit) job at one of the local county offices that was a customer of the shady computer repair place the next summer, so it all worked out okay in the end, but without getting that foot in the door, who knows how long it would have taken my career to take off?
I'm not saying yours isn't a worthy goal, just... you need to be careful with it.