Specifically organized for the use of school districts that are located adjacent to each other but across state lines, this manual provides guidelines and procedures for determining the feasibility of sharing services across those state boundaries. The activities specified in the manual utilize school district information that is readily attainable, consider the limitations of district personnel and available time, use internal rather than external expertise, and suggest study approaches that can be on-going rather than "one-shot." Following a review of the "neighbor-sharing concept," the manual introduces the five basic school district factors which require consideration and analysis when examining the possibility of cooperative programming: curriculum, student population, facilities, staffing, and finance. Each factor is discussed and examples illustrate how relevant data can be collected and presented for easy review not only to school personnel but to other publics as well. Appendix A is a 7-page list of across-border programs, including some of many years' duration. Other appendixes provide examples of the inventories and work sheets necessary for initial analysis in the decision-making process; the procedures were developed and tested in a year-long study conducted in 1982 in Wisconsin and Michigan. (BRR)