The class of Monte del Sol Charter School students watched and listened intently as senior Emma Campbell, with the help of a visual aid, demonstrated how to use a condom. The 18-year-old is one of 10 teens trained by the local Planned Parenthood to give presentations on sexuality to their peers. "We're trying to normalize sex," said Denise Jennings, Planned Parenthood in Santa Fe health educator, who trains the students and is present when they visit the schools. "We know kids don't always go to adults to discuss sex," she said. "They will go online or to friends who may...