Yes. Because the last thing we need is more parents shoving such a personal responsibility on the school systems because the parents are too afraid to talk to their kids about sex.
It's not a sin to talk about sex. Unles you say:
"Okay Billy, while having sex, think about other gods.Then make a carved image of some sort. Then scream out "FUCK YOU JESUS"! Forget about the sabbath day, and have sex with your mother and father, as it is dishonourful. then kill them. Also, you were'nt married to your parents, so there's another sin. Now stea whatever they're wearing, and go bear false witness against your neighbour, then go covet his wife and donkey."
(I just killed 10 birds with ONE STONE!)
So, please, talk to your kids about sex, just not like that.