OpenStaxOpenStax, a publishing company based at Rice University, recently announced that more than 1.5 million students have used their open textbooks. They estimate that their books will save students $70 million during the current academic year.

OpenStax publishes some of the most popular open textbooks available. They offer 25 open titles in a wide range of subjects, including biology, chemistry, physics, math, economics, psychology, American government, and history. This year, they expect their books to be used in more than 4,500 courses at 2,688 colleges and high schools.

OpenStax’s success is a prime example of the potential of open textbooks. Their books are written by top experts, beautifully designed, and targeted at the types of courses that normally have the most expensive textbooks. OpenStax’s rapid spread is further proof that the demand for open textbooks is real and growing.

Read more about OpenStax’s announcement here.