Benchmark 6C
The Human Organism: Basic Functions
Grades 9-12, page 138

Reproduction is necessary for the survival of any species. Sexual behavior depends strongly on cultural, personal, and biological factors.

NSES Content Standard C 
Life Science: Reproduction and heredity
Grades 5-8, page 157
Reproduction is a characteristic of all living systems; because no individual organism lives forever, reproduction is essential to the continuation of every species. Some organisms reproduce asexually. Other organisms reproduce sexually.

NSES Content Standard F 
Science in Personal and Social Perspectives: Personal and community health
Grades 9-12, page 197
Sexuality is basic to the physical, mental, and social development of humans. Students should understand that human sexuality involves biological functions, psychological motives, and cultural, ethnic, religious, and technological influences. Sex is a basic and powerful force that has consequences to individuals' health and to society. Students should understand various methods of controlling the reproduction process and that each method has a different type of effectiveness and different health and social consequences.