The purpose is not to teach children about sex, but to change attitudes about sex to be in line with the nihilistic beliefs of the 'anointed'. Sex supposed education has been a disaster, at least in America, but the solution to the disaster their permissiveness has created is always more of what created it in the first place.

For all that they claim to be following Europe, we don't get sex education every year, let alone starting in Kindergarten.