Teach Plus...what?

You may have caught the glowing article in the New York Times about the teachers coming in as a group from Teach Plus to some of Boston's underperforming schools (recall that Boston chose the more draconian "fire at least half the staff and principal" model for some of their schools). The ever-inquisitive Susan Ohanian did some investigating to answer the pressing question: Just who is Teach Plus?
Yes, you can find some familiar names--Gates, Bridgespan, TFA, New Schools Venture Fund--on there, along with Quaker Oats (yes, like the man in the hat).