When their primary-school teachers were disproportionately female ca. 1940, female students were more likely to complete high school & attend college, & had increased longevity

The Impact of Female Teachers on Female Students' Lifetime Well-Being. David Card, Ciprian Domnisoru, Seth G. Sanders, Lowell Taylor & Victoria Udalova. NBER Working Paper 30430. Sep 2022. DOI 10.3386/w30430

Abstract: It is widely believed that female students benefit from being taught by female teachers, particularly when those teachers serve as counter-stereotypical role models. We study education in rural areas of the US circa 1940--a setting in which there were few professional female exemplars other than teachers--and find that female students were more successful when their primary-school teachers were disproportionately female. Impacts are lifelong: female students taught by female teachers were more likely to move up the educational ladder by completing high school and attending college, and had higher lifetime family income and increased longevity.