Sexism in many Western, technological‐industrial societies is expressed in more complex ways in the 21st century than it was in the past. Cultural shifts have led to much progress toward gender equality, but narrow definitions of gender expression continue to be reinforced. Developmental research has highlighted the continued impact of sexism on children's and adolescents’ development. In this article, we review recent work on sexism in three areas: gender identity and expression, gender disparities in academic achievement, and sexual harassment and sexualized gender stereotypes. We conclude with suggestions for research.