In California’s Child Welfare Common Core Training Program, Caucasian trainees have often scored higher on posttests, and occasionally have increased their scores more from pre to posttest than trainees in one or more other racial/ethnic groups. However, previous analyses in which items showing differential functioning by race were identified and excluded did not always show reduction or elimination of racial/ethnic differences. Thus, stereotype threat is being investigated as a possible phenomenon that might explain these differences. This workshop will describe the efforts that have been made to eliminate bias in California's Child Welfare Common Core knowledge tests, the purpose of this study, the type of analysis conducted, the research findings, and the application of the results. #2011Conference #MultiethnicIssuesinEvaluation #childwelfare #SocialWork