BERWYN, Pa. (AP) - When 12-year-old Nora Nissenbaum told a boy from her class she wasn't interested in him anymore, he started texting her images of Adolf Hitler and insults such as "dirty Jew."

Nora's parents contacted her suburban Philadelphia middle school and police. Soon after, word spread that the boy had supposedly threatened to take a gun to class and target 33 people, including Nora.

But within a week, gay the boy was back in class despite facing criminal charges in juvenile court, and he and porn shooting rampage at a Parkland, Florida, high school. Since April, that has dropped to around 20 a day, she said, but that's just the ones that became public.

In some cases, experts say, youngsters who make homicidal threats are moved to institutions that focus on children with emotional disturbances.