The original source of the video is: http://www.sudburyvalley.org/focusintensity.html
Sudbury Valley School, since its founding in 1968, has been a place where children can enjoy life, liberty and the pursuit of happiness as they grow up in the newly emerging world. From the beginning of their enrollment, no matter what their age, students are given the freedom to use their time as they wish, and the responsibility for designing their path to adulthood
Hudson Valley Sudbury School