A N OLD ADAGE-THE TRULY EDUCATED never graduate-has come to exemplify the rationale for the growth and expansion of professional continuing education (PCE) programs in the United States. This monograph is about the trends and best practices in professional continuing education. It explores how this area of higher and adult education, once the sole province of colleges and universities, has now become an industry unto itself. It focuses on the plethora of organizations competing with the academy to meet the increasing demands for professional continuing education, including certification and licensing for training and preparation. PCE programs have become more numerous and diverse in nature as increased numbers of organizations other than traditional colleges and universities have entered the marketplace. The work is based on current literature in the field as well as in-depth reviews of programs and interviews with scholars and leaders.Growing demand for professional continuing education has motivated numerous public and private colleges, proprietary schools, and other kinds of professional associations and firms to entertain offering continuing professional education. In fact, colleges and universities, once secure in their sole ability to serve this marketplace and constituency, are now facing formidable competition from other organizations. The universe of continuing education providers has grown to include professional associations, professional practices, licensing agencies, nonprofit organizations, and commercial firms (publishers, equipment vendors, suppliers, and manufacturers) as well as employers (Clark and Shatkin,