This tipsheet explains that an interpreter's role is to facilitate communication and convey all auditory and signed information so that individuals with and without hearing may fully interact. It outlines the common types of services provided by interpreters, and discusses principles guiding the professional behaviors of interpreters. When working with an interpreter, professionals are urged to remember: (1) the interpreter's role is to facilitate communication, not to work as a teacher's aide or to participate in class activities; (2) familiarity with the subject matter will enhance the quality of the interpreted message; (3) keep lines of sight free for visual access to information; (4) interpreters normally interpret one or two sentences behind the speaker; (5) allow time during class discussions or questions and answer periods for the student to raise his hand, be recognized, and ask the question through the interpreter; (6) the interpreter will relay your exact words, so address the person you are communicating with, not the interpreter; (7) try avoiding talking while students are focused on written classwork; (8) plan some strategic breaks; (9) encourage the students to wait until recognized before speaking or signing; and (10) captioned films and videotapes are strongly recommended. (CR)