I think that Outcomes should be based not on non-numeric Scales, but on real points, therefore one may create and use a real rubric.
It is quite often for faculty to rate students on something like this:
| Criteria |
Excellent |
Satisfactory |
Unsatisfactory |
| Quality |
5 |
3 |
1 |
| Grammar |
5 |
3 |
1 |
| Timeline |
5 |
3 |
1 |