@spookfrommr it heavily depends on your country's educational system (or even regional if it is like the US where there aren't federal standards for sex ed).
For example, I grew up in a conservative rural town and had a special sex ed teacher come in for like a day when I was in 5th grade.
Also, i love ojou's facial reaction to young master being called poor. It basically said, "DO YOU KNOW HOW CHAD THIS SHOTA IS??? HE WILL SEDUCE YOUR MOTHERS IF YOU DON'T BACK THE FUCK OFF!!!"