# About Assignment Scales

Gradebook allows you to choose from a number of scales to score each assignment:**Points:** You can enter the number of points a student earned out of the total possible points.
You can enter non-negative numbers up to five digits and with two decimal places, such as 9.25 (out of 10 possible).**Percentage: **You can enter a percentage to indicate the student's achievement on the assignment, or number of items answered correctly.
You can enter non-negative whole numbers, e.g. 85.**Text:** You can enter notes about student performance on that assignment, track necessary information (such as group # or project
partners), or provide brief comments to students about an assignment. The maximum number of characters you can enter is 255.**4.0 Scale:** You can set up a 4.0 scale for assignments that converts to percentage scores for the purposes of calculating total scores. Use a 4.0 scale when you want students to receive their scores as values on the 4.0 scale and you want GradeBook to calculate the total score.
**Custom:** Custom scales allow you to define scores or descriptors that distinguish meaningfully between different levels of performance on an assignment.
Choose a custom scale if you wish to use any of the following to describe student performance:

- Rubric or rating scale (e.g. Excellent, Good, Fair, Poor)
- Letter grade scale (e.g., A, B+, etc.)
- Pass/Fail
- Credit/No Credit

This conversion table must be "customized" by you because agreement does not exist on how these scores or descriptors should map meaningfully onto a percentage scale. Because GradeBook converts all scores to a percentage in order to calculate a student's total score for the class, the conversion table ensures that the meaning of your custom scale (what it communicates about student achievement) is preserved in this calculation. If a straight mathematical conversion is used instead of professional judgment, students (especially those with lower scores) may be unduly penalized.

EXAMPLE: Professor Berg assigns challenging problem sets as homework. He is most interested in seeing how his students approach each problem, not whether they solve the problem correctly. He uses a 3-point rubric and a custom scale to communicate his emphasis on process over product.

Rubric scores |
Custom scale |

3 - Effective strategies and correct answer | 3 = 100% |

2 - Effective strategies, incorrect answer | 2 = 95% |

1 - Attempted, ineffective strategies | 1 = 85% |