A study was conducted at North Carolina State University to evaluate coed residence halls. The study objectives were to compare changes in the following variables for coed residents with those for residents of single sex halls: self-confidence, participation in campus and residence hall activities, perceived personal development in relationships with opposite sex, male attitudes toward the role of women, expectations and satisfaction with residence hall environment, and interaction (leisure time, dating, and sexual intercourse) with members of the opposite sex. An anonymous survey was administered in the fall 1974 semester and in the spring 1975 semester. Results indicate that residents of coed halls are no more likely than residents of single sex halls to increase their self-confidence or participation in campus and residence hall activities, to facilitate their personal development in relationships with members of the opposite sex (for females only), or to change their attitudes toward the role of women (for males only). Additionally, there were generally no initial differences between coed and single sex hall residents on each of these variables. With the exception of the freshman coed hall, coed environments did not appear to provide greater satisfaction of residence hall expectations for females than did single sex halls. For males, it appeared that coed environments were more likely to result in satisfaction than were single sex halls. (SW)