Much present social dispute concerns the need for "evidence-based" education about sex and gender though the term "evidence-based" has become simply a feel-good marketing term. The significant question in all education is what is truly based on objective research and what is simply disguised propaganda. My only, small, sex education class had (as I remember) only male students and is described in the first chapter of my novel, "Park West: A Novel of Love and Murder and Redemption," which is posted on my website. It was a graduate course at Columbia University, "Human Reproduction and Sexual Development," and taught by a well-known male OB/GYN. It must have impressed me since it is the only class whose name I still remember, along with several student questions which seemed to momentarily puzzle and surprise the teacher: "What is the function of pubic hair?" and "Does seeing your naked patients affect you?" He described the likely genetic function of pubic hair as being to provide protective cushioning; and said that his patients were only concerned with their health though, he added with a small smile, "Some vulva are prettier than others." Gender was never mentioned. Nuff said.