The establishment of the Museum Education Roundtable (MER) in 1969, the formation of the Committee on Education of the American Association of Museums (AAM) in 1973, and the creation of the Museum Education Division of the National Art Education Association (NAEA) in 1981 all represent milestones in the professionalization of museum education practice. Each organization has contributed to framing the profession's standards and guiding its direction. By the turn of the last century, art museum educators had at last transformed the uncertainties of their field into possibilities. (Contains 37 notes.)