A program designed to teach the medical vocabulary required of tumor registrars was developed and administered to 33 persons, 31 of whom were employed at 25 Louisiana hospitals. The training program was administered as a correspondence course covering such topics as the purposes of a tumor registry and how the registry is established; how to code information contained on a tumor registry; and how to abstract the chart of a cancer patient. Criterion test score results showed that on 8 of 10 criterion tests, at least 75 percent of the students scored 65 or higher. The methods described in the report can be used in developing and field-testing draft training program materials in many different subject areas. (Author)