Principals rate teachers in their own schools whom they had previously nominated as either effective or ineffective, using the four dimensions of the Tuckman Teacher Feedback Form (TTFF)--creativity, dynamism, organized demeanor, and warmth and acceptance. A sample of 180 teachers was rated, 60 each at the elementary, intermediate, and secondary levels. Results of the study confirmed that principals at different levels differ significantly in terms of their perceptions of teacher effectiveness, as determined by their ratings of teachers using the TTFF. Elementary principals appear to prefer teachers who are very warm and accepting, highly organized, and creative. Intermediate principals appear to prefer teachers who are very organized, in control, warm, sociable, fair, imaginative, creative, and dynamic. Senior high principals appear to prefer teachers who are highly systematic, organized, structured, and task-oriented. (Author/JG)