This study examines both the existence and the determinants of sex differences in teacher salaries and mobility, administrative salaries, and promotions to administrative positions. Longitudinal data on individual careers in education were used, primarily for educators in Oregon during the period 1971-81, but in some instances for educators in New York during the 1970s. Little evidence is found of sex discrimination in salaries of teachers in the 1970s, and only very small sex-related differences in wage responsiveness and interdistrict mobility were noted. Evidence on promotions to administrative positions indicates that in the early 1970s female teachers were significantly less likely to be promoted than similarly qualified male teachers, but that by the late 1970s the difference was no longer significant. In addition, formal index measures of discrimination declined by about half during the same period. By 1980 no evidence is found of salary discrimination among administrators, when experience in education is allocated into teaching and administrative components. These findings suggest that equal employment opportunity and affirmative action efforts initiated during the 1970s contributed to a reduction in employment discrimination against women in education. (Author/MLF)