This paper documents the persistence and diffusion of Soviet gender-equal norms, exploiting the 1990’s mass migration from the Former Soviet Union to Israel as a natural experiment. We track educational achievement and choices of an entire cohort, comparing gender gaps among Native students versus immigrants from FSU and other countries. We find evidence of vertical and horizontal diffusion of Soviet norms with respect to tertiary study field choice, especially those directly related to labor market occupations. In both traditionally male-dominated STEM fields and traditionally female “pink collar” jobs, such as education and social work, gender gaps are smallest among FSU immigrants. We show that these specific preferences are not explained by comparative advantages, as measured by early achievement. Finally, we show that among Natives the gender gap in field choice narrows with the presence of FSU immigrants, reflecting a shift in choice patterns of native women shift towards STEM and away from Pink collar study fields.