I'm also doing Startup School and I like the approach so far. It'll be interesting to see how they handle the scale of the current number of companies. Lectures are easy to post online, and homework/exercises are easy to distribute, but personal feedback requires individual attention, and that's not easy to recreate. The 'office hours' with groups and the vote-based-forums are a good idea to recreate some of that missing personal interaction so it'll be interesting to see how Startup School evolves.