Postsecondary institutions, and particularly community colleges, are positioned well to train more and more of the nation's entry- and middle-skill workers. The New World of Work (NWoW), a program that promoted teaching and learning soft skills, was designed in 2012 and operated briefly in over 75 community colleges in California. The program consisted of a classroom component, a work-based learning component, and a credential-granting component. A companion brief, "Implementing Soft-Skills Programs in a Postsecondary Setting: Lessons from the New World of Work" (ED623411), details lessons from its implementation. This brief focuses on the development and refinement of the credential-granting component. Specifically, it describes how psychometric analysis can inform the design of assessments used to grant credentials so that soft skills can be more accurately measured and employers and educators can recognize the credentials' value. Curriculum designers might find that psychometric analysis, in combination with other information (such as the perspectives of instructors, employers, and students), can help them determine how well their assessments capture the mastery of the soft skills students need to thrive in today's labor market.