This report summarizes information provided by 854 National Association of Independent Schools (NAIS) active member schools surveyed in the spring of 1989. It includes tuition, teacher salary, and administrator salary data for the 1989-90 school year. Data are reported in an aggregate manner according to common classifications of school type, school size, and geographic region. The report also discusses and analyzes tuition and salary trends, adjusting for changes in the cost of living over time. The base year for analysis has been set at 1981-82. Other trend years include 1985-86 and 1987-88 through 1989-90. Median figures are used to summarize trend data in this report. Tuition and salary data from the survey of 33 Canadian member schools are summarized in 4 tables out of a total of 42. Among the report highlights are the following: (1) the day student median tuition of 1989-90 is $5,987, representing an aggregate increase of 8.3 percent over the past year; (2) teacher median salaries rose 7.1 percent to $24,413 in 1989-90; and (3) head median cash salaries increased by 8.3 percent to $65,000 for 1989-90. (MLF)