As summer college classes start up around the country, many students will be spending big on textbooks and reading materials. Now a start-up out of Boston is looking to change that — though not without controversy. Boundless, a company which offers free educational materials online, is facing lawsuits from major textbook publishers over its content. 

But CEO Ariel Diaz says the reality is cash-strapped students are looking for an alternative.

“Somewhere between 30 and 70 percent of students don’t buy the assigned textbook,” Diaz says. “Textbooks are incredibly expensive, they’ve been increasing in price at three times the rate of inflation over the last 30-40 years.”

To hear more about how Boundless works, click on the audio player above.