Again, picking up on discussion on the ili list, there is interesting material from Utah State University Libraries, USA, at:
English 1010 Instructor Resources. It includes information about assessments, including a lesson plans and a criteria-referenced feedback sheet for students. Like some other US initiatives it builds on the existence of "English composition" classes, that we don't really have over here in the UK, but there are ideas that would work in different contexts, I think.
(Photo by S. Webber: Hakone Open Air Museum, Japan, July 2005)