Physical education (PE) in schools is one of the main tools used to increase physical activity and to prevent childhood obesity, and PE-related injuries are on the rise. Although increasing physical activity may reduce obesity, it may also increase the risk of injury. While recognizing that PE classes and physical activity are important components in combating obesity, parents and school administrators should remain vigilant for injuries. A recent study conducted by the Center for Injury Research and Policy of The Research Institute at Nationwide Children"s Hospital, found that the number of PE-related injuries to elementary, middle and high school students in the United States increased 150 percent between 1997 and 2007.