This resource guidebook provides planning and implementation models for year-round school schedules, including operational and instructional details. Section 1, "Statement of Needs," discusses California's overcrowded facilities, student retention, teacher compensation, and teacher shortage. "Planning Process Model," section 2, recommends methods for district-community cooperation and outlines short- and long-term models. Section 3, "Year-Round Education--A Rationale," addresses needs such as multitrack scheduling for overenrollment. Twelve plans, diagrammed in section 4, "Year-Round Education--Options," include the following: 45-15 single and multiple track, 60-20, 90-30, "concept 6," quinmester, five-track quarter, quarter, flexible all-year, and individual design and double sessions. Section 5, "Implementation Process Model," presents decisionmaking activities, including calendar determination, policy adoption, track organization, teacher selection, communication with community and staff, and program evaluation. "Operational Considerations," section 6, addresses facility design, administration and finance, personnel, and transportation. Section 7, "Instructional Considerations," concerns student scheduling, instructional levels, intersession programs, and daily operations. Evaluation methods are discussed in section 8, "Program Evaluation." Seven appendices, which comprise one-third of the guidebook, include questions and answers about scheduling, a community-based planning model, sample board policies, and sample letters and evaluation forms. (CJH)