This document discusses a lecture on gender and sexuality. It defines sex as biological while gender is socially constructed. It discusses how masculinity and femininity are defined in society and the process of gender socialization where children learn behaviors deemed appropriate for their sex. It explores how schools reproduce gender inequalities through practices, procedures and discourses that position some students as "winners" and others as "losers". It also discusses bullying and how sexuality and gender are intertwined in schools.