The role of ethnicity in predicting students' academic performance continues to attract attention from scholars and policy makers. One reason for the continued interest in whether there is a racial gap in mathematical performance relates to minorities'underrepresentation in highly technical professions (Campbell, 1989; Grandy, 1994). The underrepresentation of minorities in mathematicsrelated careers is believed to have a close relationship to their low academic achievement in mathematics (Campbell, 1989; Maxwell, 1994). However, when racial differences are investigated without taking socioeconomic status (SES) into consideration, there is a likelihood that race and SES are confounded (Kohr, Masters, Coldiron, Blust, & Skiffington, 1989). This is reflected by a disproportionate number of minority group members who are low in SES and, similarly, a disproportionate number of majority group members who are high in SES. The end result of ignoring SES when comparing the behavior of Caucasians and African Americans can be the unintentional comparison of economically advantaged Caucasian students with economically disadvantaged African American students. Thus, a simple comparison based on the number of majority and the number of minority of the science and engineering workforce (e.g., African Americans accounted for about 2% of all employed scientists and engineers) (Campbell, 1989) can certainly lead to misconceptions about racial differences. To respond more properly to the racial difference questions, the racial gaps on mathematics performance were examined after subjects were 204