I'd like to create a rubric with point ranges. For example, an excellent response would earn an 8, 9, or 10. A competent response would earn a 5, 6, or 7, etc. It doesn't seem like there's a way to do this, however. Is that right?
Correct each category level only allow single score per category. There are other Advanced grading methods that would give you what you want. Have you looked at the Marking guide option? It looks and feels a little different than Rubrics, however it does give you the option to have a range of scores per category. You do lose the nice descriptive wording for each level of the category. However by creative you may figure a way to use the field to describe the levels in the Marking guide.