“That committee’s recommendation was to launch OpenCourseWare, a website offering all of MIT’s course materials, available for free to anyone. Within one year, OCW had published a pilot website with 50 courses and attracted worldwide acclaim. Today, OCW offers materials from over 2,570 courses spanning the MIT graduate and undergraduate curriculum, from 1,735 MIT faculty and lecturers from 33 academic units across all five schools, including syllabi, lecture notes, problem sets, assignments, and audiovisual content including recorded lectures. To date, OCW has been a resource for over 210 million unique users, with over 70 percent of users in 2020 coming from outside the United States.”
https://news.mit.edu/2021/mit-courseware-educational-resource-to-millions-0406