The examination of barriers in relation to college students' vocational choice and development is an important area of research, but the barrier of classism is relatively underexamined. This may be due to the deficiencies in measurement, so we describe herein the development of a new measure, the Experiences with Classism scale (EWCS). The EWCS was developed to extend prior qualitative work that highlighted the need to consider experiences with classism in the lives of undergraduate students. Results provided initial evidence for the usefulness of the EWCS to measure undergraduate students' experiences with classism at a personal and systemic level. Across two studies, the EWCS was demonstrated to have high internal consistency reliability, to have a stable factor structure consisting of two factors, to correlate as expected with relevant demographic variables, and to fit within a nomological network of convergent and discriminant constructs. The EWCS was also demonstrated to predict self-reported experiences of depression, anxiety, stress, self-esteem, and psychological wellness. Implications for further research and practice are suggested. (Contains 3 tables.)