Graduate social work pedagogy is challenging to diverse faculty and students who work with diverse clients, often in international practice. We discuss the development, outcomes, and assessment of an assignment designed to stimulate students' research on proverbs as cultural resources for practice and to promote attainment of six competencies related to diversity and social justice of the Council on Social Work Education's Educational Policy and Accreditation Standards. We used procedures from grounded theory and Atlas.ti to analyze 40 student papers. More than 70% of papers reflected students' mastery of three competencies, suggesting the assignment was insufficient to ensure attainment of all six competencies and signaling errors in the structure of the assignment and in the rubric. Ensuring students' achievement of the competencies requires careful design and assessment of assignments and deliberate, structured assessment of the assignment outcomes.