Vice president for public education for the Guttmacher Institute,  a proponent of comprehensive sex education. Contact Rebecca Wind.

Directs the nondenominational group “Silver Ring Thing,” based just outside Pittsburgh, Pa. The group uses comedy, drama, music videos and testimonials to promote abstinence in live events each year throughout the country.

Professor of sociomedical sciences at the Mailman School of Public Health at Columbia University in New York.

A sociology professor at the University of Massachusetts, Amherst. She is the author of Talk About Sex: The Battles Over Sex Education in the United States.

Nancy Faust Sizer is a teaching a course on school reform at the Harvard Institute for Learning in Retirement. She was an adjunct lecturer on education at the Harvard Graduate School of Education. She co-wrote The Students Are Watching: Schools and the Moral Contract.

A professor of anthropology at Radford University in Radford, Va. She wrote God’s Schools: Choice and Compromise in American Society.

Director of the Center on Children, Families and the Law and a psychology professor at the University of Nebraska. He reported on research findings that deal with both abstinence-only and comprehensive sex education.

A psychology professor at DePaul University in Chicago. She is an expert on teen pregnancy and adolescent violence. She has conducted a large study on the effectiveness of school-based health clinics.

An associate professor of history at the University of Kansas at Lawrence and author of Teaching Sex: The Shaping of Adolescence in the 20th Century.