The volume, first in a series of five, presents an analysis of sex education programs in the United States. It is presented in six chapters. Chapter I provides a brief overview of sex education in the public schools and summarizes goals, forms, and prevalence of sex education. Chapter II reviews literature on the effects of school sex education programs based on behavior goals of sex education courses. Chapter III describes important features and outcomes of sex education programs and includes ratings by experts of the importance of these identified features and outcomes. Conclusions are that the dual goals of preventing pregnancy and improving the quality of relationships are mutually supportive; an emphasis should be placed on changing values, self-esteem, skills, and comfort in sex-related activities; and the classroom environment should be supportive and trusting. Chapter IV identifies 20 exemplary school sex education classes or programs and describes in detail the program at University City High School, St. Louis, Missouri. Chapter V provides an overview of nonschool sex education programs for teenagers. Programs analyzed include Planned Parenthood Affiliates, national youth organizations, local youth agencies, religious organizations, programs for pregnant teens, and hospital programs. Chapter VI contains analyses of state guidelines for sex education instruction in the public schools. Data for the study were obtained by completing a "Summary of Laws and Guidelines for Instruction in Sex Education" for each state. (Author/KC)