An analysis of the performance of minority students in Arizona (Black, Hispanic, Native American, and Asian) is presented as one working paper in the final report by the Arizona Board of Regents' Task Force on Excellence, Efficiency and Competitiveness. Data are included for the White majority for comparison purposes. School districts are grouped in intervals of 20% minority student population, and the mean National Curve Equivalent (NCE) scores in reading comprehension, total mathematics, and total language are compared between ethnic groups, between schools, and between districts. Statistics show the following: Black and Asian students in the 99 school districts of Arizona are enrolled in districts with 0% to 20% Black or Asian students; Asian and White students score higher than the other three groups in all areas, and the mean scores do not differ significantly between years; Asian students perform as well as or better than White students; and the performance on the Stanford Achievement Test (SAT) decreases in direct relation to the increase in percentage of Hispanic students in the districts. Appended are data on the following: mean NCE for each ethnic group in all districts; mean NCE and standard deviation by ethnicity in all districts for 12th grade students, 1986 and 1987; mean NCE and standard deviation for Phoenix Union High School district schools; mean NCE for schools with large ethnic enrollments, 12th grade, 1987; and mean NCE by primary home language. (SM)