Using past performance to evaluate a student's current performance is known as:

Using past performance to evaluate a student's current performance is referred to as grading by assumption. This method relies on previous observations or assessments to form judgments about a student's current abilities or achievements. It can lead to biased evaluations, as it assumes that past behaviors or performances will continue in the same pattern without considering the context of the current situation.

This approach is generally not favored in educational settings because it may overlook improvements or changes in a student's understanding or skills. Effective evaluations should focus on current performance and mastery of the material, rather than making assumptions based on history. Grading methods that focus on objective measurement and current performance are more equitable and can provide a true representation of a student's capabilities.