Apple has announced that it has surpassed 300 million iTunes U downloads in three years. iTunes U is an area of the iTunes store dedicated to educational content.

iTunes U includes content from Harvard, MIT, Cambridge, Oxford, University of Melbourne and Université de Montréal. Users can experience university courses, lab demos, sports highlights, campus tours, and special lectures from participating universities.

Apple says that new content has also just been added from universities in China, Hong Kong, Japan, Mexico and Singapore. Users now have access to over 350,000 audio and video files from educational institutions around the world.

"iTunes U makes it easy for people to discover and learn with content from many of the world’s top institutions," said Eddy Cue, Apple’s VP of Internet Services. "With such a wide selection of educational material, we’re providing iTunes users with an incredible way to learn on their computer, iPhone, iPod or iPad."

iTunes U users can access the content from a variety of devices such as Macs, PCs, iPhones, iPods, and iPads.

All iTunes U content is free.