There has been, on average, 1 school shooting every week this year

Updated 1505 GMT (2305 HKT) May 25, 2018

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We're 21 weeks into 2018, and there have already been 23 school shootings where someone was hurt or killed. That averages out to more than 1 shooting a week.

The parameters CNN followed in this count are:
  • A shooting that involved at least one person being shot (not including the shooter)
  • A shooting that occurred on school grounds
  • We included grades K through college/university level
  • We included gang violence, fights and domestic violence
  • We included accidental discharge of a firearm as long as the first two parameters are met

May 25: Noblesville, Indiana

Two people were injured when a gunman opened fire at Noblesville West Middle School in Noblesville, Indiana.

May 18: Santa Fe, Texas

Ten people were killed in a shooting at Santa Fe High School.

May 11: Palmdale, California

A 14-year-old boy went to Highland High, his former school, and began shooting a semiautomatic rifle shortly before classes were scheduled to begin, officials said. A 15-year-old boy was struck in the shoulder.

April 20: Ocala, Florida

A 17-year-old student at Forest High School was shot in the ankle shortly before students were to walk out as part of a national protest against gun violence.. The suspect was a 19-year-old former student.

April 12: Raytown, Missouri