This paper is devoted to three basic problems: gender stereotypes, styles of sexual education and the relation between these two phenomena. The main question is: do the styles of sexual education experienced in a family determine the tendency to use gender stereotypes? Basing on the literature, a hypothetical model of relation between styles of sexual education and gender stereotypes was constructed. The model was a source of investigations conducted by the author and described in the paper. Young adults’ tendency to use gender stereotypes seems to be determined by their mothers’ stereotypes and by three styles of sexual education experienced in their families.