Permissive sex education has placed before young people through books, youth clubs, clinics and classrooms all the facts, in four letter words, including the morally squalid kind, about every conceivable kind of sex. It takes sex education out of the context of traditional values, which in the ideal at least, have related sex to marriage and loyalty. By providing sex education without a moral context it implicitly approves of any form of sexual activity that a young person wants or thinks they want. It, not infrequently, introduces sexual behaviour unknown about by youth.
Another very grave danger is that naturalism which nowadays invades the field of education in that most delicate matter of purity of morals. Far too common is the error of those who with dangerous assurance and under an ugly term propagate a so-called sex-education, falsely imagining they can forearm youths against the dangers of sensuality by means purely natural, such as a foolhardy initiation and precautionary instruction for all indiscriminately, even in public; and, worse still, by exposing them at an early age to the occasions, in order to accustom them, so it is argued, and as it were to harden them against such dangers. Such persons grievously err in refusing to recognize the inborn weakness of human nature, and the law of which the Apostle speaks, fighting against the law of the mind; and also in ignoring the experience of facts, from which it is clear that, particularly in young people, evil practices are the effect not so much of ignorance of intellect as of weakness of a will exposed to dangerous occasions, and unsupported by the means of grace. (Papal Encyclical, Rappresentanti in Terra, 31 December 1929).
In the past, even when the family did not provide specific sexual education, the general culture was permeated by respect for fundamental values and hence served to protect and maintain them. In the greater part of society, both in developed and developing countries, the decline of traditional models has left children deprived of consistent and positive guidance, while parents find themselves unprepared to provide adequate answers. This new context is made worse by what we observe: an eclipse of the truth about man which, among other things, exerts pressure to reduce sex to something commonplace. In this area, society and the mass media most of the time provide depersonalized, recreational and often pessimistic information. Moreover, this information does not take into account the different stages of formation and development of children and young people, and it is influenced by a distorted individualistic concept of freedom, in an ambience lacking the basic values of life, human love and the family. Then the school, making itself available to carry out programmes of sex education, has often done this by taking the place of the family and, most of the time, with the aim of only providing information. Sometimes this really leads to the deformation of consciences. In many cases parents have given up their duty in this field or agreed to delegate it to others, because of the difficulty and their own lack of preparation. (Pontifical Council for the Family: The Truth and Meaning of Human Sexuality, 1995).
Nonetheless, in the context of moral and sexual information, various problems can arise in this stage of childhood. In some societies today, there are planned and determined attempts to impose premature sex information on children. But, at this stage of development, children are still not capable of fully understanding the value of the affective dimension of sexuality. They cannot understand and control sexual imagery within the proper context of moral principles and, for this reason, they cannot integrate premature sexual information with moral responsibility. Such information tends to shatter their emotional and educational development and to disturb the natural serenity of this period of life. Parents should politely but firmly exclude any attempts to violate children's innocence because such attempts compromise the spiritual, moral and emotional development of growing persons who have a right to their innocence. A further problem arises when children receive premature sex information from the mass media or from their peers who have been led astray or received premature sex education. In this case, parents will have to begin to give carefully limited sexual information, usually to correct immoral and erroneous information or to control obscene language. (Pontifical Council for the Family: The Truth and Meaning of Human Sexuality, 1995).
In the first place, parents must reject secularized and anti-natalist sex education, which puts God at the margin of life and regards the birth of a child as a threat. This sex education is spread by large organizations and international associations that promote abortion, sterilization and contraception. These organizations want to impose a false lifestyle against the truth of human sexuality. Working at national or state levels, these organizations try to arouse the fear of the "threat of over-population" among children and young people to promote the contraceptive mentality, that is, the "anti-life" mentality. They spread false ideas about the "reproductive health" and "sexual and reproductive rights" of young people. Furthermore, some antinatalist organizations maintain those clinics which, violating the rights of parents, provide abortion and contraception for young people, thus promoting promiscuity and consequently an increase in teenage pregnancies. "As we look towards the year 2000, how can we fail to think of the young? What is being held up to them? A society of 'things' and not of 'persons'. The right to do as they will from their earliest years, without any constraint, provided it is 'safe'. The unreserved gift of self, mastery of one's instincts, the sense of responsibility – these are notions considered as belonging to another age." (Pontifical Council for the Family: The Truth and Meaning of Human Sexuality, 1995).
In some societies professional associations of sex-educators, sex-counsellors and sex-therapists are operating. Because their work is often based on unsound theories, lacking scientific value and closed to an authentic anthropology, theories that do not recognize the true value of chastity, parents should regard such associations with great caution, no matter what official recognition they may have received. When their outlook is out of harmony with the teachings of the Church, this is evident not only in their work, but also in their publications which are widely diffused in various countries. (Pontifical Council for the Family: The Truth and Meaning of Human Sexuality, 1995).
Another abuse occurs whenever sex education is given to children by teaching them all the intimate details of genital relationships, even in a graphic way. Today this is often motivated by wanting to provide education for "safe sex", above all in relation to the spread of AIDS. In this situation, parents must also reject the promotion of so-called "safe sex" or "safer sex", a dangerous and immoral policy based on the deluded theory that the condom can provide adequate protection against AIDS. Parents must insist on continence outside marriage and fidelity in marriage as the only true and secure education for the prevention of this contagious disease. (Pontifical Council for the Family: The Truth and Meaning of Human Sexuality, 1995).
Parents should also be attentive to ways in which sexual instruction can be inserted in the context of other subjects which are otherwise useful (for example, health and hygiene, personal development, family life, children's literature, social and cultural studies etc.). In these situations it is more difficult to control the content of sexual instruction. This method of inclusion is used in particular by those who promote sex instruction within the perspective of birth control or in countries where the government does not respect the rights of parents in this field. But catechesis would also be distorted if the inseparable links between religion and morality were to be used as a pretext for introducing into religious instruction the biological and affective sexual information which the parents should give according to their prudent decision in their own home. (Pontifical Council for the Family: The Truth and Meaning of Human Sexuality, 1995).