This action research study examined how peer tutoring of students with disabilities causes changes in the attitudes of high school peer tutors. Data were gathered through surveys, interviews, and open-ended questions completed by 18 high school peer tutors. Results showed that the peer tutors involved held positive attitudes and beliefs toward individuals with disabilities. Tutors were members of an elective peer tutoring class and tutored students with moderate mental handicaps in a self-contained middle school class. Many tutors reported that their feelings toward people with disabilities prior to the class were generally fearful. The peer tutor survey, interview protocol, and open-ended questions are appended. (Contains 21 references.) (DB)