 Many schools now provide safer sex education to teen and pre-teen students, who may engage in sexual activity.Since some adolescents are going to have sex, a harm-reductionist approach supports a sexual education which emphasizes the use of protective devices like condoms and dental dams to protect against unwanted pregnancy and the transmission of STIs.Since 1999 some countries have legalized prostitution, such as Germany (2002) and New Zealand (2003).