Rubrics in Moodle Assignment
Rubrics let you define grading criteria with levels that you can select depending on how well each student meets each criterion. The grade will be automatically calculated based upon these selections and converted to whatever the assignment is marked out of (usually 100%).
As well as enabling faster and more consistent marking and feedback, Rubrics can also help students to understand the marking criteria before they write and submit their work.
In the Moodle Assignment settings page you can choose to mark by using a Rubric, rather than simply selecting a grade.
Here's an example of a Moodle Assignment Rubric