For many reasons this often doesn't happen or happens too late. Children can catch you off-guard with questions. It helps parents and carers gain the confidence and skills to talk to their children about sex, relationships and sexuality and growing up.
Sex is a fundamental part of being human; but less than half of our states require sex and HIV education, and most of what is taught is sub-par.
Currently, we are failing. It's been shown to help students, not hurt. It won't: for the record the evidence shows that the opposite is true. A child should be tailored to always talk to his or her parent about anything and without fears.
Access to comprehensive, medically accurate sex education is a human right.