I’m currently reading Consider Assessment and Evaluation, A Foxfire Teacher Reader (1999). On page 13, a reference is made to the Coalition of Essential Schools (CES). I checked out their webpage, and it seems to be an interesting organization. Their Common Principles have considerable overlap with Foxfire’s Core Practices. Specifically, both programs focus on developing the mind rather than focusing on minutiae of the curriculum. Foxfire focuses more on student choice, whereas CES talks about personalizing the educational experience.
CES seems to be a active national organization than Foxfire, with an annual meeting in Maine, and more polished website and materials. CES has a much larger network of schools, including some in the Pacific Northwest.