A new study by the Centers for Disease Control found that a quarter of high school students drink at least one soda a day, though many more drink other sweetened beverages like sports drinks and flavored milk, reports the Associated Press. When all sweetened drinks are considered, the figure is more like two-thirds of high schoolers, but that is actually down from as high as three-quarters back in the 1990s. Also on the positive side, almost three-quarters drink at least one serving a water a day.