I attended Startup School 2011; I regret wasting the day there. I thought that "Startup School" would be more like the "How to Start a Startup" lecture series that YC is running at Stanford. Instead, it was just a bunch of celebrities talking about their startup experiences; a concentrated shot of survival bias. There's nothing practical to learn from the Startup School talks. As for inspiration, I guess some people…
Depends on whether any of speakers had a track record of two or more successful startups. Not advising, not managing, but actually starting a company from zero and growing it into a meaningful business.
Because, as they say, once - you're lucky, twice - you're good, a bunch of once'es is a selection bias example.