mystral: I fail to see the point of Sex Ed, frankly.
It's never been part of the school curriculum in France, and yet we have a lower than average teenage pregnancy rate.
You don't need a whole course to say "wear a condom" which is basically what sex ed amounts to. The rest is up to the student and his parents imho.
As for students coming from very conservative households, I don't think a few hours of having a teacher harping at a teenager on the subject is going to make up for years of parents telling him sex is evil.
You realize most adults use condoms wrong. It's not evident to a kid that there's a 3% failure rate for pregnancy, that you should throw it away if you touch it to the tip of your penis and realize you've got it backwards (instead of just flipping it over and putting it on), or that carrying it in a wallet can ruin it.
Also a kid won't realize that typical condoms feel like a kitchen rubber glove and that there are better ones out there (Trojans suck, buy Kimono) thus leading some to try and avoid using them when they can get away with it.
Also, encouraging kids to talk about weird stuff with a doctor can prevent the spread of STDs, rather than them being so embarrassed they don't bring it up. Your low teen pregnancy rate could have more to due with birth control usage than kids practicing safe sex.
Sex ed can be useful for a lot of things. The content typically works well in the standard health and wellness class, there's no reason for a separate course outside of university really. The content, of course, should vary on the age group.
hedwards: Up until relatively recently it was a foregone conclusion that by the time you married you'd have an STD unless both partners waited for marriage. These days it's relatively reasonable to expect that neither will have any significant infections.
You'd be surprised at the real number of people carrying one of the herpes simplex viruses. Just because they never show symptoms and rarely transmit it doesn't mean they don't have it. In the US, I believe the real number is believed to be upwards of 90%.
Honestly most health insurance pays for STD tests in the US, just get them all at your yearly checkup, even in a committed relationship you never know for certain if your partner is messing around on the side.