Coeducation at the U.S. Military Academy from June 1977 to April 1978 is analyzed. Summaries of individual research projects conducted to understand and evaluate specific aspects of coeducation are included. An open-systems model served as a conceptual guide for the study. The following areas were explored: individual adjustment, attitudes, social background characteristics, individual performance, attrition, unit performance and leadership, and institutional reaction. Data were obtained through periodic surveys, interviews, and observations of cadets and officers. The classes of 1980 and 1981 were highly similar in terms of abilities, interests, and attitudes. Sex differences that were found to exist for the class of 1980 were also found in the class of 1981. Men and women differed significantly in physical aptitude, in attitudes toward appropriate roles for women in society and in the Army, and in personal life-style preferences. Although men's attitudes toward appropriate roles for women in society tend to be traditional and relatively fixed, stereotypic attitudes and expectations toward women's abilities are giving way to a recognition of the talents and abilities of individual women cadets known. The report includes background information on the intellectual bases for the role of women in the military, information on women faculty and administrators, and a description of human relations lectures and workshops for cadets and officers. A bibliography, a sample "Attitude Toward Women Scale," schedules of activities, and a lesson outline on "Women at West Point" are included. (SW)