The Internet is also a catalyst for change. U.S. enrollment in online virtual classes reached the 1 million mark last year, 22 times the level seen in 2000, according to the North American Council for Online Learning, an industry body.

That’s only the beginning, said Michael Horn, co-author of “Disrupting Class: How Disruptive Innovation Will Change the Way the World Learns”.

“Our projections show that 50 percent of high school courses will be taught online by 2019. It’s about one percent right now,” said Horn, executive director of education at Innosight Institute, a nonprofit think tank in Massachusetts.

K12 Inc, which provides online curriculum and educational services in 17 U.S. states, has seen student enrollment rise 57 percent from last year to 41,000 full-time students, said its chief executive, Ron Packard.

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