Adolescent fertility is a problem that is urgent in developing countries due to rapid population growth rates. To gain a better understanding of adolescent fertility within developing countries a study was undertaken to examine adolescent sexual behavior among teens within a developing country, Zambia. A self-administered questionnaire was given to secondary school going teenage women in Zambia. The sample population consisted of 503 women between the ages of 12 and 19. The survey was analyzed using both regression and univariate analysis of the data. The findings revealed that a high percentage of the teens have initiated sexual activity; yet few (4.2%) have ever used modern contraceptive methods. Suggestions were made for family planning programs that would involve both parents and their children.