The program "Teen STAR (Sexuality Teaching in the context of Adult Responsibility)" begins by helping young people understand the woman's cyclic and the man's constant fertility in order to encourage pre-marital abstinence in adolescents. Students then discover the values of fertility and begin to derive the norms that govern possessing it. Developmentally appropriate curricula are available for junior high, senior high, teen parents, and university level students. Results from the program are presented for the United States, Canada, Chili, and Poland. When the power to procreate is given a high value rather than a negative value, different behavioral outcomes are encountered among sexually active females. It was found that teaching teenage women and, later, men to understand and value their body's fertility within a comprehensive program of sexuality education facilitated maturation. (EMK)