"In Sweden, sex education has been a mandatory part of school education since 1956. The subject is usually started between ages 7 and 10, and continues up through the grades, incorporated into different subjects such as biology and history"
A personal little story for you. Many years ago I asked a Swedish boy who was spending a year at our school .. in which I as an off subject function taught a Personal Development course, including sex education .. what was the basic difference between Swedish kids and the kids at our high school .. his reply was .. 'kids here are so much more hung up .. more JUVENILE .. in their attitudes about sex, than high school kids in Sweden' .. he said, 'for example porn .. we were shown porn early as a part of our sex education courses, and by the time we reach this age we are tired of it .. it became boring.'