The perceptions of undergraduates regarding the social environment of the University of California-Davis campus are presented, based on a student opinion survey. The extent and nature of social integration among undergraduates is discussed, with a focus on whether the social environment differs among ethnic groups (Black, Chicano, Asian, and White). The four aspects of the social environment explored are: extracurricular activities; rules and regulations of student life; community relations; and social problems (health and well-being and intolerance on campus). Some of the major findings are as follows: undergraduates overall are well satisfied with most aspects of the campus' social environment; satisfaction level among ethnic groups vary considerably; Davis undergraduates are generally very pleased with extracurricular programs and services; students are moderately satisfied with the rules and regulations that govern student life; undergraduates overall report fairly high satisfaction with community relations on the Davis campus; Davis students overwhelmingly single out alcohol abuse as the most serious of the health and well-being problems; and student overall rate intolerance of homosexuality as a more serious problem for Davis students than racial intolerance (though this opinion is not shared by Blacks). Two appendices are persistence and graduation data and responses to individual questions. Tables showing measures of social integration are included. Contains 12 references. (SM)