A non-sexist preschool program was developed which attempted to eliminate sex-stereotyping in room arrangement, classroom materials, curriculum units, and teacher behavior and language. Measurements of sex-role stereotyping administered to the children before and after a 6-month exposure to the non-sexist program consisted of an Occupation Clue Test, an adaptation of the Toy Preference Test, and an adaptation of the Incomplete Stories Test. Children in a comparable control group, who did not participate in the non-sexist program, were also tested at the post-program time of measurement. Comparison of the means of the experimental group before and after exposure to the non-sexist program indicated that the means were not significantly different for all the measurements taken together. However, comparison of the means of the experimental group and the control group at the post-program time of measurement indicated that the experimental group was significantly less sex-typed than the control group. Comparison of the pre- and post-program means for the three separate measures of comparison of the means of the experimental group and the sex-typing indicated a significant difference on only the Occupation Clue Test measurement. Thus it appeared that the area of the non-sexist program that produced the greatest impact on the children was the introduction of non-stereotyped occupation persons (a female police officer, for example) in the classroom setting. A literature review, bibliography, and samples of test items are included. (Author/SS)