Professional school counselors must increasingly be prepared to work in more racially and ethnically diverse school settings. At the same time, most school counselor trainees continue to be from the dominant culture, raising the likelihood of culture clashes and ethical violations. This article describes the use of a computer version of a measure of ethical sensitivity to racial and gender intolerance, the Racial Ethical Sensitivity Test-Compact Disk (REST-CD; Sirin, Brabeck, Satiani, & Rogers-Serin, 2003) with school counselor interns. A study of 54 school counselor interns showed that courses in professional ethics and multicultural issues were positively related to scores on the REST-CD. Implications for training and directions for future research are discussed. (Contains 3 tables.)