Derek Thompson at the Atlantic chimed in on the Businessweek article featuring K12.  He got tripped up on a few things: 

First, K12 is not a “for-profit virtual middle school.”  It is a provider of online curriculum, technology and school services.  The company partners with schools, school districts and other education institutions to provide online learning programs and services.  All the schools using K12 are nonprofit and governed by an independent, nonprofit governing board. 

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