Recommending AP Calculus more to males than females and AP Biology more to females than males.
Expecting Chinese students to turn in mathematics homework routinely but have lower or no expectations among other students, such as Hispanic or African American.
Providing a dressing room for males in automotive technology but requiring females to go into another area of the school to change.
Having hearts, flowers, or traditionally female decorations on walls, shelves, and desks in a medical or health-related classroom.
Phrasing teaching examples so that professionals, doctors, lawyers, scientists are "he" and the weak and irrational are "she."
Using female references as negative labels or insults, such as "You throw like a girl" or "You act like a girly-man."