It also includes information about contraception and sexually transmitted infections (STIs), including HIV.
And it goes beyond information, to encourage confidence and improved communication skills.
Common avenues for sex education are parents or caregivers, formal school programs, and public health campaigns.
Traditionally, adolescents in many cultures were not given any information on sexual matters, with the discussion of these issues being considered taboo.
The girls are charged with manufacturing, disseminating or possessing child pornography, while the boys who received the photos are charged with possession.
A meta-analysis that compared comprehensive sex education programs with abstinence-only programs found that abstinence-only programs did not reduce the likelihood of pregnancy, but rather may have increased it.
Numerous studies show that curricula providing accurate information about condoms and contraception can lead to reductions in the risky behaviors reported by young people as well as reductions in unintended pregnancies and STIs.
Such instruction, as was given, was traditionally left to a child's parents, and often this was put off until just before a child's marriage.
The progressive education movement of the late 19th century, however, led to the introduction of "social hygiene" in North American school curricula and the advent of school-based sex education.