Apple has sent word iTunes U downloads from the iTunes Store have passed 300 million.

The Mac maker notes over 800 universities throughout the world have active iTunes U sites, while nearly half of those institutions distribute content publicly on the iTunes Store. iTunes users now have access to over 350,000 audio and video files from educational institutions around the world.

Universities in China, Hong Kong, Japan, Mexico and Singapore are among the latest to add new content.

The free iTunes U service gives anyone the chance to experience university courses, lab demonstrations, sports highlights, campus tours and special lectures.

Apple iTunes U

"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 vice president of Internet Services in a press release.

"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."