Erotic play, useful or repulsive?

In Aldous Huxley's Brave New World, the children have a time set aside just for play. This is referred to as erotic play, and the children are then advised to touch each other and explore their private areas on their bodies and the bodies of others. This is mentioned in the beginning of chapter 3, where Huxley writes, "Outside, in the garden, it was playtime. Naked in the warm June sunshine, six or seven hundred little boys and girls were running with shrill yells over the lawns..."
Although this is something that many would find repulsive in our society, I do find advantages in this idea. We are not exposed to anything sexual and do not understand our own body parts throughout our childhood.
Today, I find it a shame that we do not properly educate our youth about sex. I did experience some sex education in the 4th grade, but most of what we learned was vague and pertained more to the experience of puberty than sex itself. I do not believe sex is a matter that should be promoted as common and necessary for youth, but it should not be something that is frowned upon and banned from any type of educational subjects. When we are educated with scare tactics to stay away from sex, we find it hard to ask important questions about sex and how it should properly and more importantly, safely work. In a very technologically advanced society, we should have better resources and opportunities to learn about how to practice sex safely.
I find it very common that we are also sexist about sexual education. Boys learn about their bodies and how their sex organs work at a young age and understand very well how sex should feel for them. However, many girls go through their whole adolescent years without understanding where their own sex organs are even located. I find it ridiculous that we are not taught about our own bodies. Never once in school was I taught about anything on my body that wasn't anatomically equal to males.
I haven't taken Health yet because I transferred late into AP Human Geography during our freshman year and never had room to fit it into my schedule. However, Health is a class that is taken when we are fourteen years old. I can guarantee you that there are students who have had sexual experiences before that, and have often wondered about sex as well. In the civilized society that is portrayed in Brave New World, women such as Lenina are open to sex and clearly understand the benefits of it and the contraceptives necessary to live without having a child.
Many of us grow up in an environment where the topic of sex is taboo. Religions shun sex until marriage, and parents would prefer us to stay innocent well into adulthood. However, abstinence is a practice that is not common for all teens. Although our parents and religion would prefer sexual acts to be saved for marriage, it's common that students and teens to be performing these sexual acts anyways. When we aren't educated about sex, we also do not learn how to practice sex in a safe way to prevent sexually transmitted diseases and pregnancy. I did learn about condoms in Biology, but not many of us know about contraceptive alternatives. Condoms can break. Young woman need to know about birth control pills and emergency contraceptive in case of an accident. I know many of my friends who are not aware of emergency contraceptive and in the incident of a pregnancy scare, they would not know all their options. It's important to understand how your bodies work and how to handle sex in a safe way because it can be physically dangerous if a man does not know how to handle a woman's body and the woman is too afraid to speak up about pain.
I appreciate in Brave New World, that children are advised to learn about their body parts that are often shunned from normal conversation. I think it is an important part of growing up to understand the difference between females and males and to understand their bodies and how every inch of their bodies work. We deserve a right to understand the bodies we were born with. I hope that as we advance into the future, that we may become more open to the topic of sex and to help educate our youth. My question for you all is, would you accept the practice of erotic play within children, or do you believe that we should not promote sexual activities within our youth?