Remember to send your children to Khan Academy!

The Khan Academy

"My single biggest goal is to try to deliver things the way I wish they were delivered to me," he told me recently....

But to Mr. Khan, occasional mistakes are part of his method. By watching him stumble through a problem, students see the process better, he argues. Sometimes they correct him in comments on his YouTube videos, and he says this makes students more engaged with the material. "Sometimes when it's a little rough, it's going to be a better product than when you overprepare," he says.

The Khan Academy explicitly challenges many of higher-education's most sacred assumptions: that professional academics make the best teachers; that hourlong lectures are the best way to relate material; and that in-person teaching is better than videos. Mr. Khan argues that his little lectures disprove all of that....

Clay Shirky, an associate teacher at New York University and a popular Internet guru, recently challenged his more than 50,000 Twitter followers with a similar thought exercise:

"If you were going to create a college from scratch, what would you do?"

-College 2.0: A Self-Appointed Teacher Runs a One-Man 'Academy' on YouTube