chromosome and female genitalia for one. Those people exist and physical education classes are where people should learn about this instead of having a global harassment stage. Similarly, the idea that somebody can have multiple or contrasting sets of genitals. Misunderstanding or ignorance of these things has had real-world consequences. Teens actually should learn these things even if they just impact a small minority of people. Where better to learn important things than school, and how better to display complex topics than familiar visuals?