Just found this video on Summerhill School in England. I am glad to see that the presentation has dispensed with the cliche of the "free school" as chaos and anarchy theme. In fact, this presentation seems to emphasize as many visual images of kids being studious as playful. I also like how they brought out some of the philosophical issues and how the school has fared in relation to the larger system in which they are embedded.
This article on Summerhill goes the opposite direction and even calls it "strict" and says they have 150 to 230 rule!