The Social Class and Classism Training Questionnaire was developed to assess multicultural competency and training of social class and classism for school counselor trainees (SCTs). The authors analyzed the differences between accreditation status, social class backgrounds, and factors contributing to SCTs' competence and training. Results showed that socially desirable responding, number of multicultural courses, and training level contributed most to perceived competence and training. This study provides insight into factors influencing SCTs' competence and training of social class.