Because courts have required that selection tests be job-related, this study was undertaken to provide a practical means of performing a job analysis of teaching. Several court decisions are discussed, including Griggs v. Duke Power Company and Chance v. Board of Examiners, with respect to both Fourteenth Amendment and statutory issues. In the first phase of the job analysis, a questionnaire instrument was developed, based on the work of 48 teachers in 6 committees representing 2 school districts and 3 school levels: elementary, middle, and secondary. These committees developed lists of 14 teaching functions and 298 tasks. From this data, a 294-item questionnaire was developed, administered to 831 teachers in 19 districts in New York State, and the results were factor analyzed. Nine reliable oblique, but distinct, factors were found: busy work; administration (school); testing and evaluation; breadth of instructional goals; counseling; administration (classroom); teaching; enrichment; and extra-curricular activities. Differences in the importance of the nine factors were found to be related primarily to grade level taught. School district and years of teaching experience were also situational determinants. (The job analysis questionnaire is appended). (CTM)