The measure of how a performance compares with that other students in his or her class is called?

The measure of how a performance compares with that of other students in the same class is called relative performance.

Here are some other terms that are related to relative performance:

* Percentile rank: This indicates the percentage of students who scored below a particular student.

* Standardized score: This converts raw scores to a common scale, allowing for comparisons across different groups.

* Norm-referenced assessment: This type of assessment compares student performance to a pre-established norm group.

It's important to note that relative performance is just one aspect of evaluating student success. Other factors, such as individual growth and mastery of specific skills, are also important to consider.