Joe Nathan, a senior fellow at the Hubert Humphrey Institute at the University of Minnesota, has spent much time interviewing parents who teach at home.

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Same goes for Blake Griffin, last year's top NBA pick who sat out his rookie season with a broken kneecap, and Minnesota Twins relief pitcher Joe Nathan, healthy and productive for seven straight years before going out with a shoulder injury this season.

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Brian Chesky, Joe Gebbia and Nathan Blecharczyk, who founded the company in 2008, also stand to gain from the potential new investment.

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