Hi Amy:
Boy, usually when instructors speak of subjective testing, they arn't nearly as challenging as the subjectivity of taste. But I imagine ther are many courses or skill in other professions that have similiarly finite measures of performance, that are just as subjective.
Maybe one way to contribute to your grading rubric would be to add a componen t that asks the student to assess a grade. I have found that more students than not are more critical on themselves than the instructor might be. Just a thought.
Regards, Barry