This 10-year follow-up three-part evaluation describes how well the City of Buena Vista (Virginia) Public Schools implemented a year-round school program for high school students. The focus of the program was the organization and development of a tuition-free extended-school-year quarter plan that included a voluntary fourth quarter. The evaluation of the year-round program centered on the years 1976-77, 1981-82, and 1985-86. The following objectives were measured: (1) to develop and implement a fourth quarter plan available to all 9th-through-12th-grade students; (2) to use school facilities efficiently; (3) to provide an optional fourth quarter in the summer to enable students to enroll on a voluntary basis for promotion, enrichment, acceleration, and remediation; (4) to furnish a meaningful summer program for students, below the legal age, to work in the local industries; and (5) to determine the success of the year-round school plan based on the attitudes of pupils and teachers as revealed by a questionnaire. Percentages were employed to describe met or unmet objectives. The following evaluation results were consistent after 1-, 5-, and 10-year follow-ups: (1) eventually 54 percent of the regular day students used the year-round plan; (2) school facilities were used effectively; (3) an increase in pupil attendance for the purpose of promotion, enrichment, acceleration, and remediation compared favorably to the traditional semester program; (4) pupil attendance increased during the fourth quarter for students below the legal age to work; and (5) teachers and students approved continuing the fourth-quarter plan. (JAM)