Forty-two principals completed an inventory on attitudes toward mainstreaming handicapped students. Principals responded to each of 40 statements on a five-point scale. Among findings were that one-third supported the special class model as the best placement for handicapped children, yet approximately three quarters believed that normal Ss profit from contact with the handicapped; only four principals believed that mainstreaming would have a negative effect on the self-concept of the handicapped; 75% believed that the placement of handicapped children in regular classes will help teachers grow personally and professionally; 60% stated that if they were parents of handicapped children they would want the child in a regular class most of the day; and 90% believed that mainstreaming would increase the chances for the handicapped to attain a more productive and independent place in society. Findings have implications for planning appropriate coursework and workshops for administrative personnel. (CL)