It all makes sense now.
At first I was a bit surprised that Bill Gates and Michelle Rhee were opposed to publicizing the value-added data from New York City and other cities.
Could they be experiencing twinges of a bad conscience?
That's not it. Nor do these educational Deformers think that value-added mysticism is nonsense. They think it's wonderful and that teachers' ability to retain their jobs and earn bonuses or warnings should largely depend on it.