A Tri-Level Quality Assurance Model consisting of state, local, and national levels of organization is described. Quality assurance is defined as a broad concept integrating traditional quality assurance activities with professional education and credentialing. The Iowa Occupational Therapy Association Professional Standards Review System is described as an example of the Tri-Level Model. Components of the Tri-Level Model include professional education, professional credentialing, development of standards of practice, liaison activities with the Professional Standards Review Organizations and the Joint Commission on Accreditation of Hospitals, continuing education, external review, and internal review. It is recommended that, with the growth in quality assurance activities, state associations consider the Tri-Level Quality Assurance Model as a valuable tool for professional development.