I'm in, and I love Chrys's additions too!
How about having/teaching a sense of humor? It's just as educational to add up toilets as it is to add up apples! And who wouldn't rather study "Who's On First?" over "Young Goodman Brown"?
I would also really, really love to see theme-based curricula - one year the whole school explores the notion of change as it relates to each major subject of study, the next year it might be law or ethics, etc. Maybe a four- or five-year rotation would be good, to allow topics to be revisited in much greater depth as the students mature.
