After 15 years teaching a class about sex, the most popular course at the University of Washington, this professor shares her most important takeaways. Credit...Ruth Fremson/The New York Times ...

But also because it helps to set a tone for the class, one that is respectful of the pull and mystery of sex, its fascinations, and power to preoccupy. It shows the students that they have not ...

Every year, for close to 20 years, I’ve been teaching the human sexuality class at my small midwestern university. It’s a popular class, as the subject matter famously sells itself. Over many years of ...