His fifth-grade class at Landon Prep in Bethesda is among the school's best-behaved. How does teacher Doug Nettles keep the peace?
"A loud voice and mean looks," said Nettles, former Baltimore Colts cornerback. "When I walk into the room, everybody gets quiet. Kids say, 'He's mean and scary.' Course, that didn't always work on the football field. Being 6 feet and 175 pounds didn't intimidate anyone."
Teaching American history to 10-year-olds is a joy for Nettles, 65, the Colts' fifth-round draft pick in 1974 who played five years here.
"I like kids, and helping to develop their minds," he said. "My sisters used to say that I have...