What is a potential disadvantage of peer grading?

A potential disadvantage of peer grading is that it may introduce bias based on personal relationships among students. When students assess each other's work, their judgments can be influenced by their personal feelings about the peer being graded. For instance, a student might give a higher or lower score based on friendship or rivalry rather than the quality of the work itself. This can lead to inconsistencies in grading, where the grades reflect social dynamics rather than an accurate assessment of performance.

In educational settings, it is essential to maintain fairness and objectivity in grading to ensure that all students are evaluated based on their abilities and efforts rather than subjective factors. The presence of bias in peer grading can undermine the integrity of the assessment process and could lead to resentment among students, further complicating the learning environment.