This volume attempts to identify and describe factors that supported the unexpected expansion of Elementary and Secondary Education Act Title I services in thirteen participating local education agencies (LEAs). It also describes changes in program delivery patterns that may not have supported expansion of services but may have accompanied allocation policy change, and describes selected problems and successes faced by the individual districts as they conducted their programs. Increases in services received by students were attributed by the investigators to changes in the total availability of Title I funds, shifting of resources to elementary instruction, shifts in uses of funds within elementary instruction, and changes in the availability of donated resources. On the program delivery level, the investigators found that LEAs focused more on elementary instruction, modified coordination with other compensatory programs, changed staffing patterns, and increased specialist utilization and class size. Experiences of the LEAs in implementing allocation policy are described, with focus on the problems associated with changing from poverty to achievement criteria in the allocation of Title I resources, issues of service delivery, and parent involvement and reaction to allocation policy changes. (MK)