The author presents an overview of the rescheduled school year concept as it relates to the economic and educational objectives of a school district. He points out various approaches that could be adopted in designing a rescheduled school year program and presents a guide sheet designed to assist in predicting the effectiveness of an extended school year plan. The major portion of the document is given over to a description of a case study made to determine the impact of a rescheduled school year on a school district. The case study covers enrollment projections; school capacity; and estimated needs for classrooms, construction, buses, operation, and teachers. A comparison of costs under the rescheduled year with costs under the present conventional schedule concludes the study. (Pages 29 and 33-37 may reproduce poorly.) (DN)