Edmodo was founded in in late 2008, by Nic Borg and Jeff O'Hara, who were working in a public school in Illinois. They wanted to create a safe social networking environment that would allow teachers to connect with students and to share resources and ideas with one another. (Here’s their story.) Since then, Edmodo has become widely referred to as “Facebook for schools.”
By January 2011, the Edmodo community was approaching 5 million teachers and students, up from 500,000 in September 2010. It reached about 21 million users by mid 2013.
Not so surprising, then, that when the company raised its B round of funding of $15 million in late 2010, the new investors should include people with ample experience in building social networks: Reid Hoffman, founder and chairman of LinkedIn and a managing partner at Greylock Partners, and Matt Cohler, formerly vice president of product management at Facebook and now a general partner with Benchmark Capital. Both Hoffman and Cohler also joined the Edmodo board.
The company moved its headquarters to San Mateo, Calif., in 2010. As of 2013 it had raised $40 million in venture financing. Venture investors include: Learn Capital, Union Square Ventures, Greylock Partners, Benchmark, New Enterprise Associates and Glynn Capital Management.
Edmodo acquired Root-1 in March 2013. In June 2013, Crystal Hutter became CEO. As of mid 2013, Edmodo had about 21 million registered users and more than 100 employees.
"Just as LinkedIn is the professional graph for work and Facebook is the social graph for your friends, Edmodo is the educational graph for learning," Hoffman said.