This publication is part 3 of a three-part report of the 1975-76 Educational Research Service National Survey of Salaries and Wages in Public Schools. This volume reports 1975-76 school year data on salaries or annual earnings for five selected clerical positions, as well as hourly wage rates of instructional teacher aides, noninstructional teacher aides, building custodians, cafeteria workers, and bus drivers. The survey collected data on salaries scheduled and salaries paid for 22 selected professional positions and 10 selected support positions in public school systems throughout the United States. The sample for the survey was randomly selected from all public school systems enrolling 300 or more pupils. The 742 responding school systems reported data covering approximately one-third of all public school employees. Salary data in each volume are presented and analyzed according to four categories of school system enrollment, four levels of per-pupil expenditure, eight geographic regions, and for each individual school system arranged alphabetically by state. (Author/JG)