The purpose of the research was to identify variables affecting the attitudes and involvement of school counsellors in the inclusion of students with disabilities in regular classrooms. The sample included 220 primary and middle school counsellors in Israel. Two specially constructed questionnaires (i.e., the Involvement in Inclusion Questionnaire and the Personal and Institutional Characteristics Questionnaire) and an adaptation of the Shechtman, Reiter, and Schanin (1993) Attitude Questionnaire were employed in the research. The findings indicated that counsellors have positive attitudes towards inclusion and allocated about 36% of their time to inclusion activities. Special education training and attitudes toward inclusion were the variables that explained the greatest amount of variance in the counsellors' involvement.