I've been intersted in incorporating an extensive reading component in my classes here at the university. I haven't been able to work out some of the logistical problems, the biggest being the distribution of reading material. If I use graded readers, which I would like to do, I would be responsible for them. The library would only be responsible if the students took them out of the library following the standard procedures. I would be tasked with controling the flow of material, and I'm not so good at that. I found some great materials, though. There are a couple of articles in the Furl window at the bottom of the page.
Check out The Extensive Reading Pages for a wealth of information on the subject.