FILE - In this Wednesday, Aug. 17, 2011 file photo, students listen during an assembly on the first day of school at a temporary high school in a converted store in Joplin, Mo., nearly three months after an EF-5 tornado destroyed six schools and damaged four others along with killing 160 people and devastating a third of the city. According to research cited in a report by the federal Agency for Healthcare Research and Quality, about two-thirds of U.S. children and teens younger than 18 will experience at least one traumatic event, including shootings and other violence, car crashes and weather disasters.
Section:Photo
