Freie Klasse Weimar took place in May 2010. It was a self-organized learning platform composed of people on the common quest to exchange, experiment, share, experience and question together. Its primary infrastructures were respect and curiosity. It was open to anyone and everyone and built on the belief that every person has valuable knowledge and questions and that we can all benefit from sharing them publicly.
Documentation of the whole project here: Freie Klasse Weimar