Our day for million milestones.  From the Harvard Crimson:

EdX has hit the one-million students mark—meaning it’s one-thousandth of the way to its goal of educating one billion people.
The online learning venture, which was launched by Harvard and MIT in May 2012, announced the benchmark with a tweet Wednesday along with this photo of some of its staff beaming and celebrating at edX’s Cambridge office. The platform’s one millionth student joined on Tuesday, the tweet said. Read more.

MIT OpenCourseWare, by the way, has reached an estimated 150 million people worldwide, but we’ve had eleven years to work on it!