This study received the 1973 Delta Pi Epsilon National Research Award for outstanding doctoral research study in business education. The primary purpose of the study was to determine the relationship between student and supervisor evaluations of the teaching effectiveness of general business teachers. Secondary purposes were to identify the qualities of effective general business teachers through a performance specimen checklist and a rating scale, and to describe background factors of teachers judged effective to determine whether there is a commonality of experiences or preparation. It was assumed that students are competent evaluators of teacher effectiveness, that the checklist cited observable behaviors, and that the teacher's immediate supervisor could provide a more reliable rating than other supervisors. The study was limited to a sample of 30 general business teachers in East Tennessee and evaluated teaching effectiveness only. Both instruments proved to be valid. There was a significant relationship between student and immediate supervisor evaluations. No relationship between the number of years of teaching experience and effectiveness was found by students, but was by supervisors. Neither group evaluation revealed a significant relationship between years of experience in general business teaching or outside work experience and teaching effectiveness. (AG)