I have been teaching in business and had to take a seminar on case
study writing. Case studies are usually wrote to demonstrate and
exercise some concepts that were discuses on class. That's why case
studies are usually business focused.
A new trend have emerge where companies think that if some one wrote
about them can be a way of marketing. This has led to some documents
that are half case-study half white-papers. White papers in the sense
of a success story.
There are new needs for academics papers as there are a lot of new
programs for NGO management were classical business case study does
not fit. For instance, MBAs does not deal on how to recruit and
motivate volunteers, which can be very important for NGO and for us.
A good case-study, white-paper or mixture, should be a nice to read
composition. It that sense, this case studies can have broader use.