Of 544 school shooting incidents over an 11-year period, less than 5% of the shooters were female, according to Everytown for Gun Safety.

A teenage student opened fire with a handgun Monday at a private Christian school in Wisconsin, killing a teacher and another teenager during the final week before Christmas break. The shooter also died,

A 15-year-old girl shot and killed a fellow student and a teacher and wounded six other people at a small private Christian school on Monday, leaving a community reeling as another act of violence struck America.