A sex education expert says school children should watch sex videos and have lessons on how to be considerate lovers.
Retired Oxford University lecturer John Wilson says schools should offer "erotic education".
Writing in the journal Sex Education, he says schools should teach children how to be good and caring lovers. Videos and books, he said, were a good way of doing this.
"These representations will show, in detail, what a desirable sexual encounter looks like," he wrote.
"Sexual partners feeling and saying and doing the right sort of thing with each other."
Mr Wilson said parents and teachers used practical examples and experience to help children cope with aggression or lack of confidence, and the same approach should be used in sex education.
"When it comes to sexuality or eroticism, we offer no examples to imitate, no contexts of self-expression and no hands-on experience," he wrote.
Mr Wilson suggests pupils could use role-play to act out negotiations between couples about sex.
Earlier this year, a sex education programme running in 150 schools in England was attacked for being too explicit.
The programme, called A Pause, includes information about oral sex and the practicalities of gay sex.
It was the first scheme in Europe to show a reduction in rates of sexual activity among young people.
The department for education's guidance on sex and relationship education is that it should be about "the importance of marriage for family life; stable and loving relationships, respect, love and care".
It is also meant to be about "the teaching of sex, sexuality and sexual health and not about the promotion of sexual orientation or sexual activity".