Many rural school districts struggling with declining elementary school enrollments will soon face the more complex problems of declining high school enrollment. School districts with only one high school do not have the option of consolidation and must find innovative solutions to the problem of maintaining educational quality with dwindling resources. Interdistrict sharing, introduced in Iowa in 1979, allows a district to offer a comprehensive educational program even though it lacks a comprehensive school. Sharing strategies include pooling students in a single location, bringing students and teachers together across large distances through technological communication links, and rotating teachers, administrators, equipment, or facilities. School administrators could consider interdistrict cooperation when (1) teachers need the opportunity to learn new teaching methods; (2) students need wider vocational experiences; (3) the school needs qualified counselors or specialists; or (4) the school is unable to offer advanced courses or special gifted or handicapped programs. A 16-step plan for successful development of cooperative strategies involves: (1) a needs assessment; (2) discussions among all interested parties; (3) use of a third-party consultant and legal counsel; (4) widespread publicity accentuating the positive; and (5) sufficient time and opportunities for school personnel and community members from both districts to air their views and resolve difficulties. (SV)