How and when should sex ed be taught in school?

Police in Los Angeles have arrested an 11th student from Venice High School in connection with the alleged sex crimes that came to light last week. While details are still emerging in this specific case, it raises questions about how sex ed is taught in schools: what's required, what's considered appropriate and what's effective.

We're joined by Dr. Norman Constantine, director of the Center for Research on Adolescent Health and Development at the Public Health Institute and professor at the UC Berkeley School of Public Health.