Ethnographic study

So, I need to know what you thing, feel, believe about sex education and when is it appropriate to initiate "the talk". Specifically, what do you think about abstinence only education? Should parents be more involved in the classroom teaching practices on the subject? Would you volunteer/ participate in your child class? Do you have children? When did you or when will you approach the subject with your own kids? And, what subject matter did you cover? How open are the discussions about sex in your family? Talk to me....