April 1987 marked the seventh year of the statewide testing program in reading, language, and mathematics mandated by the Arizona State legislature. The Arizona testing program used nationally-standardized norm-referenced achievement tests. The Iowa Tests of Basic Skills (ITBS) were administered to students in grades 1 through 8, the Stanford Achievement Test (SAT-7) was administered to students in grade 9, and the Stanford Test of Academic Skills (TASK) was administered to students in grades 10 through 12. The report first summarizes student performance in reading, mathematics, and language across all grades and then presents a summary of statewide performance by each grade level. In all, 498,231 Arizona students were tested during the week of April 20-24, 1987. The statewide data reported are based on performance of these students who were enrolled in 918 schools in 210 districts. Arizona students scored in the average range in all areas tested on all tests taken, indicating an overall level of achievement at about the national average. Reading scores were above the national average for grades 2, 4, 5, and 9 through 12. Reading scores for grades 1, 3, 7, and 8 were slightly below the national average. Performance in languages was at or above the national average in all Grades. Gains in performance in comparison with 1986 Arizona scores were seen for all achievement areas except reading in grade 3 and reading and language in grade 9. Thirty-eight tables and 28 bar graphs contain testing results. The appendix contains grade equivalents for reading, language, and mathematics for all grades. (SLD)