Information from the administration of the Basic Skills Assessment Program (BSAP) within the Charleston County (South Carolina) School District is presented. Tests are administered in the spring of each school year to students in grades 1, 2, 3, 6, and 8 as part of the BSAP. These tests have been administered statewide since 1981. BSAP tests were designed to assess student achievement in reading, mathematics, and writing. Reading and mathematics tests were administered in grades 1, 2, 3, 6, and 8; writing tests were administered in grades 6 and 8. Data are provided for 17,075 students administered the BSAP during the week of April 27 through May 1, 1987. Analyses presented in this report include: (1) district-wide results including the percentages of students meeting standards and median scale scores; (2) comparisons of district results with state results; (3) breakdowns of district test results by demographic characteristics of the students (including ethnicity, gender, and income); (4) historical results for the district and each school; and (5) percentages of district students mastering each BSAP objective and comparisons of district students answering each item correctly to students statewide answering each item correctly. Notably, second and third graders proved strong in reading and mathematics, while sixth and eighth graders performed relatively poorly in mathematics and eighth-grade students performed relatively poorly in writing. Fifteen tables and 10 figures are included, and eight appendices provide extensive tabulated data. (TJH)