Social class microaggressions (SCM) are pervasive and detrimental interpersonal or environmental offenses that attack, insult, or undermine individuals based on their perceived social class or socioeconomic background. As the American Counseling Association has adopted the new Multicultural and Social Justice Counseling Competencies (2015), counselor educators and supervisors are called to meet the needs of students and supervisees of diverse social class backgrounds. Unfortunately, class-related competence is an area in which many counselor educators and supervisors lack specific training or familiarity. This in-depth roundtable will present original, innovative research on SCM, and will help participants increase competence and effectiveness when working with students and supervisees of various social classes.