Vid: The Two-Million-Dollar Teacher—An Online Marketplace Empowers Educators and Lets Them Earn Big $$$

In 2006, a New York City public school teacher named Paul Edelman launched Teachers Pay Teachers, an online marektplace that lets educators sell digital copies of their classroom materials for small amounts of money. 

"It's booming," says Amy Berner, who's the head of community and editorial for Teachers Pay Teachers. Gross sales grew from $900,000 in 2010 to $44 million in 2013. With over a million items to choose from on the site, so far teachers have earned nearly $48 million on Teachers Pay Teachers.