How do I add blank (no text) performance levels to my rubric?
When designing rubrics, you may want to leave performance levels blank for a given criterion. To do so, add spaces to the Observation for Evaluator text field (indicated by the red highlight below) during the second step of the Rubric Wizard.
Next, click on the Update button to save the changes. Now the performance level will appear blank in the rubric during assessment, but can still be chosen.