Data obtained from 44 vocational teachers and 519 adult students included measures of student verbal gain, manual gain, satisfaction, and persistence, and of teachers' educational level, experience teaching adults, years of trade experience, age, mental ability, subject matter knowledge, teaching style, and number of teaching techniques used. The teacher's mental ability, age, and teaching experience were not positively correlated with student satisfaction, persistence, and verbal and manual gain. Verbal and manual gain were correlated with teacher's subject knowledge. Teacher's educational level was negatively correlated with student satisfaction and years of trade experience was negatively correlated with persistence. Teaching style and number of teaching techniques used did not influence students. Student manual gain was positively correlated with verbal gain and negatively correlated with satisfaction and persistence. It was recommended that scores on skill development tests be a major criterion in the certification and selection of teachers of adult vocational courses where student verbal and manual gain are objectives. Administrators should select course objectives before selecting teachers. (aj)