It seems that in terms of preventing abortions and unwanted pregnancies, China can learn something from other countries. In countries like the United States, Britain, Germany, Japan and Singapore, all schools have sex education courses which begin from the early grades, even in primary schools.

Some may argue that despite sex education being mandatory in US schools, abortions and unwanted pregnancies among American teenagers is still high. A Guttmacher Institute's survey shows that the abortion rate among 15-to-17-year-old American girls was 11.3 per 1,000 between 2000 and 2008, while a Family Research Council study shows the rate of abortion among unmarried women who cohabit is 52 per 1,000. But people need to realize that not ignorance about sex education but people's (especially youngsters') attitude toward sex is to blame for that. Plus, culture plays a big role in people's attitude toward sex.

Sex education in schools doesn't necessarily mean encouraging "sexual liberation". In China, where people are relatively conservative about sex, introducing sex education in schools in the early grades will help youngsters avoid unsafe sex rather than encourage them to have sex.

Every generation believes it "invented" sex, because the preceding generations did not tell them the facts about sexual activity and how to engage in it responsibly. Sexual activity and sexual feelings are a pervasive part of human experience. A survey conducted some years ago found it is not true that men always think about sex, though they think about it often. As for women, one need only read Nancy Friday's My Secret Garden, in which she has collected the typical sexual fantasies of a large number of women to show that sex is a central feature of women's world, too.

Therefore, humans do not have sex just for procreation. Sex serves multiple purposes, including personal pleasure, social bonding - as seen among live-in partners and spouses - and procreation.

Children and teenagers nowadays see images and stories about romance and sex in the media almost every day. They talk with friends or use the Internet to get information on sex. But the information they get may not be wholesome or accurate.

Avoiding discussions on sex won't prevent young people from taking interest in or having sex. It will only force them to get information from other sources which could be misleading and even dangerous, and could lead to unwanted pregnancies or sexually transmitted diseases.

Sensitive teachers imparting knowledge about sex to children, especially teenagers, will consider their age. Everything is not appropriate at every age. But when it comes to older teens, the topics could include the physical mechanics of sex or "what sex is", the nature of sexual attraction, sexual feelings and sexual pleasure, various approaches to values related to sex, sexually transmissible diseases and how to prevent them, safe sex practices, sexual preferences, how to say "no" to sex and how to accept a "no", and actions to take if one becomes pregnant.

As a necessary element of human life, it is only appropriate that sex - like other aspects of our lives - be dealt with frankly and appropriately in the educational process. It is true that primary school children are too young to experience sex. It is also true that they may not be ready for some kinds of information. But preparing them for the future is essential for healthy development and responsible use of this human faculty.