The Composite Indicator of Changes (CIC) in average salaries and wages paid by public school systems is a statistical measure based on data collected and reported annually for 28 of 32 public employee positions that gauges and compares salary changes and analyzes salary trends in individual school systems, groups of school systems, and nationally. This report describes the development, computation, and use of the CIC and reports on salary and wage changes for the decade 1976-77 to 1986-87. Data are broken down showing change among groups of school personnel, among comparable school systems, and within economic indicators such as the Consumer Price Index. The six groups of school personnel compared are central office administrators, school building administrators, classroom teachers, auxiliary professional personnel, secretarial and clerical personnel, and other support personnel. School systems are grouped for comparison by enrollment. Instructions are provided illustrating (1) how to use the CIC to compare local school systems on the basis of state and national data and (2) changes over an extended period. Included are 12 tables, 9 figures, 6 references, and 3 appendices with worksheets for developing local data. (WTH)