A literature review is provided on model programs to improve articulation and transfer between two- and four-year colleges at institutional and state levels. Part I focuses on statewide program models. After presenting background on the development of transfer policies and the incorporation of articulation goals in state master plans, this section identifies four types of transfer and articulation documents in use and indicates which states use each of the following type: mandates traced to the state constitution or legislation; state system policies; voluntary interinstitutional or intersegmental agreements; and agreements primarily concerned with vocational-technical education. This section concludes with brief summaries of statewide programs and activities in Arizona, California, Florida, Illinois, Massachusetts, Minnesota, Missouri, Nevada, New York, North Carolina, Rhode Island, South Carolina, Texas, and Washington. Part II discusses interinstitutional and intersegmental activities and programs, concluding that current trends emphasize tightening of relationships between secondary and postsecondary schools. This section focuses on efforts to ensure access to higher education for disadvantaged populations and ethnic minorities; remedial education; vocational-technical education; computerized information systems; and business, industry, proprietary schools, and the military. (JMC)