An associate professor and program director of public health at Western Kentucky University. He is an expert on teen issues, including sex education.

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.

Gregory Hall is president and CEO of Warner Southern College in Lake Wales, Fla.

Joseph A. Pipa, Jr. is president of Greenville Presbyterian Theological Seminary in Taylors, S.C., as well as a professor of historic and systematic theology.

Timothy D. Terrell is an associate professor of economics at Wofford College in South Carolina. He is a senior fellow with the Cornwall Alliance for the Stewardship of Creation.

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.

The Charles Frank Reavis Sr. Professor of Law at Cornell Law School in Ithaca, N.Y. Shiffrin has written that liberals need to give faith-based groups more leeway to receive federal funds.