You can choose to grade a students work with a 4-point or a 5-point scale. Depending on your needs, you are able to choose either option when using quick score.
To do this, when choosing the grading mode for an assignment to give feedback to your kids, you will have two options when choosing "Quick Score." These options belong to the different point scales you can use to grade the work.
Choose either the 4- or 5-point scale, and grade the student work as usual. The selection will be saved for that assignment, and you can choose to apply a different scale for a next assignment. In that way, you are not tied to a single scale, and you can apply what better suits each assignments needs.