In 1990-91, the second year of Alaska's statewide testing program, the Iowa Tests of Basic Skills was administered to 24,684 Alaskan public school students in grades 4, 6, and 8. The nationally normed achievement test covered reading, mathematics, and language arts. Most students in grades 6 and 8 scored above the 50th percentile in all subjects, based upon 1985 national norms, while slightly less than half of grade 4 students scored above the 50th percentile in language arts and reading. Lower school-district scores were associated with high rates of students from poor families and from homes where English is a second language. At the time of test administration, students and principals completed brief questionnaires. Students with higher scores were more likely to have attended kindergarten, to read daily outside of school, and to plan to attend college, and were less likely to watch television and to be late for school. Higher test scores were also related to lower teacher and principal turnover and to school literature-based reading programs. Most of this document consists of test results profiles for the state and for each of its 54 school districts. Profiles present average percentile scores overall and for each grade tested in reading, mathematics, and language arts; comparisons with 1989-90 scores; ethnic composition; and percentages of bilingual, special needs, migrant, Chapter 1, and gifted students. (SV)