As a former Pediatric RN, I learned many things about children.  

One thing I do know for certain is that children are innocent about things concerning sex, unless some older child or adult has traumatized them with things far beyond their ability to process.  Many of those traumatized block those memories sometimes for many years, until something triggers that incident.

Young children do not need to learn about sex in school or anywhere else and especially sexual deviation.  They are too young to process these things!

I have known people who were sexually molested before they were ten years old, and because they were not able to process those memories, turned to drugs for a number of years.  I know first hand that when children are sexually molested, they turn that on themselves and feel like they were responsible!

Let's let children be children and enjoy their innocence!  They are NOT little adults!

Older children from grades 8