The Lectures Are Recorded, So Why Go to Class?

When video recordings of Ravi Janardan's computer-science course at the University of Minnesota-Twin Cities first went online, the students loved it. Instead of dragging themselves out of bed for the 8 a.m. lectures, many started skipping classes and watching the recordings instead.

"Personally I was not too happy about it," says Mr. Janardan, who complained to administrators. And he wasn't the only professor concerned. "There were a lot of howls of protest about it. People were not

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