A project was conducted to develop and field test comptency-based modules of a Health Occupations Students of America (HOSA) Student Manual, to write a descriptive report about the process of developing the manual, and to evaluate both these products and the infusion process through descriptive research. Following development, 11 modules were field tested at three field test sites in Kentucky and revised according to evaluative data. A questionnaire was developed so that approximately 40 health career students, along with advisors, at each field test site evaluated the 11 modules. The modules were subsequently revised and four additional modules developed. Information from the students and advisors showed that (1) the various sections of the modules were satisfactory to both students and advisors; (2) HOSA activities can be made an integral part of health occupations education; (3) affective feelings and values, such as satisfaction in learning, commitment, respect, understanding of the group process, and pride can be increased through HOSA activities; and (4) while using the modules, student autonomy was affected to a low degree. Recommendations were made to change the format of the modules by binding them into a single volume, and to make additions to the manual's Instructor Guide; recommendations were also made for modifications in developing the modules and infusing them into the curriculum. (KC)