A study was done to determine demographic characteristics, inservice needs, and preferences toward inservice activities of part-time adult vocational teachers in Pennsylvania. A survey instrument was sent to 4,141 individuals currently teaching adult vocational classes in Pennsylvania. The respondents were asked for background information, their perceptions of desire for and acquired proficiency levels in thirty-four competency areas, and their preferences toward inservice activities. The results of this study found (1) that most adult vocational teachers were teaching at the secondary level full-time and at the adult level part-time, (2) that the majority of adult vocational teachers held no valid teaching certificate and were not pursuing any type of degree or certificate, (3) that adult vocational teachers perceived themselves as being less proficient than desired for adult vocational teachers in most competency areas, (4) that the competency areas in which adult vocational teachers needed to improve their proficiency to the largest degree were in providing special instruction or assistance to second language or disadvantaged and handicapped students, and in utilizing an advisory committee to determine student and community needs, and (5) that although adult vocational teachers differed on the preferred strategies for carrying out inservice activities, 75% indicated a willingness to participate. (The survey instrument and a table showing the respondents' status in thirty-four competency areas are appended.) (Author/EM)