Results of the 1987 assessments of grades 4, 5, 7, 9, and 11 in South Carolina public schools are summarized. The Comprehensive Tests of Basic Skills, Form U, was administered to 222,956 South Carolina students in these grades. Achievement levels of grades 4, 5, and 7 were above the national median in all seven areas tested (reading, spelling, language, mathematics, reference skills, science, and social studies). The 1987 assessment represents the first time that students in these three grades scored above the national median in all areas. In grades 9 and 11, scores were above the national median in all areas, except reading, reference skills, and science. Performance has risen for all grades since 1983, reflecting great improvement in educational quality in South Carolina. Bar graphs show performance for each grade form 1983 to 1987. Six appendices describe the tested students according to the parameters included in the report. (SLD)