Emilie Munson in the Times Union tracks the 76 school shooting incidents since 1971 in New York. That number comes from the Advanced Thinking in Homeland Security program at the U.S. Naval Postgraduate School's Center for Homeland Security and Defense, which counts a school shooting incident "when a gun is brandished, is fired, or a bullet hits school property for any reason, regardless of the number of victims, time of day, or day of week." By that definition, there have been four shootings at New York schools this year, in Staten Island, Brooklyn, Buffalo, and Mount Vernon. Of the known cases since 1971, 33 of the perpetrators were between 13 and 17 years old, and four were 18 years old, and eight were 21 years of age or older. Handguns were used in most of these incidents, with rifles used in four cases. "The 76 incidents produced 97 victims, most of them male students who were wounded. In nearly all the incidents, one or two people was injured or killed," Munson writes. FBI records say there were ten active shooter incidents in New York from 2000 to 2019. Read more about this story in the Times Union.