The Use of Bar Code Technology in Grading to Improve Student Anonymity and Reduce Identity-Based Bias

Abstract

This paper studies the use and benefits of bar codes for providing greater student anonymity and enhancing grading fairness. Two studies are reported in this manuscript. Study 1 found that using bar codes to obscure the identity of students is more difficult than using other common methods for identifying students such as using names or numbers. Study 2 revealed that although most students supported greater anonymity in grading, many students opposed anonymity because they felt that it reduces the social process that also influences grade judgments, a process that they perceived to work in their favor.