Bill Gates: 'What I've Learned About Great Teachers'

Bill Gates: 'What I've Learned About Great Teachers'

"In almost every area of human endeavor, the practice improves over time," says Microsoft co-founder Bill Gates. "That hasn't been the case for teaching." This month, Gates is sounding the alarm about public education in Waiting for "Superman," a new documentary from An Inconvenient Truth's Davis Guggenheim.

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