Educators from 12 states take 3-day firearms course in Ohio

GREENVILLE, Ohio -- A group that keeps track of school shootings in the U.S. said there were 240 incidents since 2013 -- about one a week -- including one last week at a high school near Spokane, Washington.Some teachers believe the answer is to arm themselves, while others strongly disagree.Eight states allow kindergarten through 12th-grade school staff who have a concealed carry license to be armed. But of the 40 states prohibiting firearms in schools, many have a loophole that can allow it.Mo