Lecturers may well put together a case study that should then be used in classrooms in the shape of a "training" case study (also see case method and casebook system). By way of example, as early as 1870 at Harvard Law University, Christopher Langdell departed from the normal lecture-and-notes approach https://collinbofrp.ampedpages.com/hbs-case-study-assignment-help-can-be-fun-for-anyone-58169956