I found this article on the net... It was quite an old one but it's the best article that I can get hold of that gives clear explanation on the need of sex education in school..
I especially like the part .. not falling for the “if you love me, you will have sex with me”
here is the full article..
We all need to face facts that our young people are having their first sexual experience at an earlier age and have a shallow understanding of HIV. Not only that, we read of gang-rapes, unwanted teenage pregnancies, baby dumping and even stories of teenagers being totally unaware that they are pregnant until they deliver. Sex education is not only about the mechanics of sex but also learning how to respect our bodies and one another. It need not encourage promiscuity, but properly taught can encourage abstinence till marriage and not falling for the “if you love me, you will have sex with me” line. It is needed to encourage responsible sexual behavior and avoid unwanted pregnancies, STDs and HIV/AIDs. One last point — parents should not just leave it to the teachers but take it upon themselves (no matter how embarassing) to have frank discussions of responsible sexual behaviour with their kids. After all we want the best for our kids and want to protect them in every possible way, don’t we?