Schools should promote celibacy and abstinence as "positive life choices", the Church of England says.
The act of refraining from sexual activity is part of the Church's advice for sex education lessons.
In a blog post, it also says pupils should be taught the importance of "trust, loyalty and fidelity" in relationships.
Sex and relationships education was made compulsory in secondary schools in England last year.
The Church of England believes marriage is "the perfect context" for any form of sexual expression.