For over 30 years, the Council for the Advancement of Standards in Higher Education (CAS) has developed and promulgated standards of practice for quality programs and services. The standards are designed intentionally to promote student learning and developmental outcomes through a self-assessment process. CAS has coalesced professional expectations from 40 member associations, emphasizing the integrity of campus programs through comprehensive structural soundness and ethical excellence. In this chapter, the authors start with a review of the role of standards in professional practice, addressing how the CAS approach is foundational to the integrity of quality professional practice. Then, their discussion moves to the various CAS resources that ground student affairs practice in integrity. The chapter ends by exploring challenges CAS faces to ensure quality programs in student affairs. (Contains 1 exhibit.)