The Illinois Ratings of Teacher Effectiveness (IRTE) is an instrument for recording senior high school student perceptions of teacher performance in ten trait areas: teacher appearance, ability to explain, friendliness, grading fairness, discipline, outside classroom assignments, enjoyment of teaching, voice, mannerisms, and command of subject matter. In addition to the test instrument, the document contains a teacher's manual, detailing uses of the IRTE, its development and validity/reliability studies, sugqested teacher orientation in administering the test, and scoring and interpretation techniques. (MJB)