Patrick Moran, a teacher in my grad program, devised a chart that I use when I teach culture. I give it out to my students at the beginning of each course to help describe what I am going to do in the course. Note - where communicative competence in the language and culture occurs.
Students know both what to say and how to do it in a culturally appropriate manner.
They decide whether or not to change. I'd be interested in hearing comments about this framework. Roger, if you think this is useful, feel free to put it on the Teahouse web site. I think we are always teaching culture, so it is a good idea to give a little thought to when and how we are teaching each of the levels Susan Schwartz outlined for us. It is a matter of explaining to them that English proficiency means mastery of rhetorical forms as well as grammatical structures.