The concept of gender is constantly evolving and is viewed by many as a socially constructed phenomenon, as performative, as a fluid and potentially ever-changing amalgamation of clothing, behaviors, gestures, speech patterns, and the like, subject to the milieu of which one is a member. Once thought to be essentially tied to biological sex, gender is now conceived as more prone to individual choice and level of comfort and not inextricably linked to biology. This entry briefly introduces research on gender bias in education and its effects. The entry concludes with a discussion of proposed policy prescriptions.