Rubric score calculator
Choose how many levels the rubric has, then give each criterion a weight and the level it reached. Criteria with weight 0 are ignored, so you can use as many of the five rows as you need.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Pick the highest level of your rubric (for example 4 for Exemplary, Proficient, Developing, Beginning).
- Give each criterion its weight and the level achieved.
- Set the weight of unused rows to 0.
How it works
percentage = Σ(weight × level) ÷ (Σ weight × highest level) × 100.
Worked example
Four criteria weighted 30, 30, 25 and 15 reach levels 3, 4, 3 and 2 on a four-level rubric. The sum is 90 + 120 + 75 + 30 = 315; divided by the total weight 100 it is 3.15, and 3.15 ÷ 4 = 78.75 percent.
Tips
Write the level descriptors before scoring, and use the same weights for every student so results stay comparable.
Frequently asked questions
How is the rubric score calculated?
Each level is multiplied by its criterion weight and the products are added. That sum is divided by the total weight to give a weighted average level, then by the top level and multiplied by 100 for the percentage.
Do the weights have to add up to 100?
No. Only their proportions matter, so weights of 30, 30, 25 and 15 give the same result as 6, 6, 5 and 3. The total weight is shown for reference.
Can I use half levels?
Yes. Levels can be decimals such as 2.5, as long as they stay between 0 and the highest level.
How do I turn the percentage into a letter grade?
Rubric scores have no universal letter scale. Use your course's cut-offs, or try the letter grade converter for a common US scale.