The evaluation of 24 elementary schools in 11 Utah school districts using extended day or extended year programs is the purpose of this summary report. Specific research goals are the identification of program characteristics; program implications for education in general, personnel, families, communities, and the physical structure; level of participant acceptance; and cost effectiveness. Each district is treated as a case study. Methodology is based on cost analysis, a comparison of achievement test scores, program observations, a survey of teacher attitudes and experiences, a patron telephone survey, and interviews with participants at all levels. Findings of each data collection method for both programs are summarized, recommendations are offered, and graphs and tables illustrate the data analysis. Appendices include copies of the survey instruments, a list of steering committee members, the school sample, sample school calendars, and teacher and patron comments. (LMI)