tech quadrupled to 630 million in 2012. over the same period, the number of companies funded quadrupled from 23 to 95. >> with tablets and open content we can have blended high schools that give hundreds of millions of kids a shot at college and the idea economies. >> one of the areas drawing the most attention is higher education. startups offering free online courses from top universities. like corsara that raised more than $65 million. already generating more than a million dollars in revenue and launching an alliance of educators and employers, nine mayor companies including google and at&t to help them provide training for employees and offer online classes and curriculum to help students prepare for tech jobs. they helped schools like georgia tech offer a paid masters program for less than $7,000. but it's not all for profit companies. harvard and mit created a non-profit. >> for students that get better education, they get more access. >> reporter: they partnered with a corporate giant google to launch what it is calling youtube for free online courses. to make a class as accessible as a funny video. for "nightly business report", i'm julia boors