Johnny is home sick, and feeling mean. He calls the school, or writes a note... "The School is wired with a bomb that will explode at noon."
Police come , check out the school, find no bomb... Johnny confesses, receives two weeks detention... or at worst, may be charged with a felony... usually a year in jail.
My point in the beginning, was hoping that the law would provide the ultimate charge.... attempted murder.
Making clear to the population the seriousness of the crime, IMHO, would give pause to many troublemakers... like this: Pressure cooker threat
This does not preclude a trial, but if only a partial influence on those who would try the offense, something more than what now disappears in the news.
For obvious reasons, I would not suggest that going 70 in a 65 mph zone should entail a $1,000 fine, but I think you'd agree that it might slow down some freeway traffic.