GroupWise does permit sharing of documents between users, by a process of checkin and checkout from a Library, but there may be other forms of collaborative writing software that would be more useful in the classroom context. A glance through the links below would enlarge conception of the possibilities.

Some Collaborative Writing Links

PROF DAVID'S GUIDELINES FOR COLLABORATIVE WRITING

from U. Pittsburgh

Collaborative Writing Projects on the Internet (Ruth Vilmi)

from Appalachian State

Group Work and Collaborative Writing from UC Davis

University Writing Program at Virginia Tech Statement on Collaborative Writing and Writing Intensive Course Requirements (and see Program Home Page)

Tools for Online Education, some of which address collaborative writing

CommonSpace collaborative writing software

Online Bibliography of Computer-Supported Collaborative Writing (Under Construction)
Lee Honeycutt - Rensselaer Polytechnic Institute
Deborah Bosley - University of North Carolina at Charlotte

links on collaboratories