I'm interested to see what responses you get! In theory, it seems like the Sudbury model would be perfect for gifted kids, but I'm sure it depends somewhat on the kid's personality. (I think most of us are past thinking any one education model can work for all kids.)

I don't have any real experience with the democratic school model, but I'm currently reading the book Free to Learn by Perter Gray. It starts with a history of our current education system (going back to education in hunter/gatherer societies) and then moves on to a more detailed "defense" of the democratic school model.

There might be better books out there, but this is the first one I've read. I wanted to mention it in case anyone else wanted to learn more. If someone has better suggestions for reading materials, I'd love to hear about them!