Glazer, Nathan. "To YouTube and Beyond." Review of The One World School House by Salman Khan, Education Next, Summer 2013.
Excerpt: We are getting used to explosive growth in the world of the Internet (note Facebook), but Salman Khan’s creation, in a few short years, of Khan Academy, with its potentially enormous impact on the slow-moving world of K–12 education, is still remarkable. The publicity material for Khan’s book says it is “the world’s most popular on-line learning site.” Khan tells us there are “more than six million unique visitors per month,…this number growing by 400% per year. The videos had been viewed over 140 million times and students had done nearly half a billion exercises through our software. I had personally posted more than three thousand video lessons—all free, untainted by commercials—covering everything from basic arithmetic to advanced calculus, from physics to finance to biology, from chemistry to the French Revolution.”