A peer is a person or individual with whom you are affiliated and who is on the same level as you at work or college. Other high school students are a person’s classmates if they are in 10th grade. If a person is an executive, his or her peers are coworkers at the same level. It’s a word used frequently in HR throughout the performance appraisal process. Peer evaluation is a procedure through which coworkers appraise each other. Peer evaluation is the name given to this practice.Â