Schelsky was born in Chemnitz, Saxony.
In 1970, Schelsky was called to be a professor of sociology at the newly founded Bielefeld University (creating by the way the only German full "Faculty of Sociology", and the "Centre of Interdisciplinarian Research" ("Zentrum für Interdisziplinäre Forschung" [ZiF] at Rheda), planned to be a 'German Harvard').