This paper discusses ways that institutions can change the higher education system and environment to accommodate more minority students. The first section, "Institutional Climate and Minority Achievement," presents an overview of the problems facing colleges and universities with respect to recruiting and retaining minority students. In the second section, "Interventions: the Visible Evidence of Organizational Culture," three stages of intervention strategies for increasing diversity are discussed. The following types of interventions characterize stage 1: (1) student recruitment; (2) financial aid; and (3) admissions and scheduling. The following types of interventions characterize stage 2: (1) outreach programs; (2) transition programs; (3) mentoring and advising; (4) environment; and (5) residence halls. The following types of interventions characterize stage 3: (1) student assessment; (2) learning assistance; and (3) curriculum content. In the third section, "Managing Organizational Culture," the following topics are discussed: (1) strategic planning; (2) coordination and control; (3) increasing staff diversity; and (4) faculty incentives and support. The fourth section, "Assessing Outcomes as Indicators of Organizational Culture," analyzes minority participation and achievement data for 20 institutions. The patterns exhibited by these institutions are discussed, and it is suggested that the following distinct organizational culture structures exist: (1) adaptive; (2) strategic/adaptive; (3) reactive/strategic; and (4) reactive. Seven tables are included. A list of 10 references is included. (JS)