In late August, two teachers at a private elementary school in Florida were killed when their vehicle was shot at by an unknown gunman.
The shooter was later identified as a 20-year-old man from West Monroe, Florida.
Two days later, another teacher, Mary Lynn Kallinen, was shot to death outside of a charter school in Colorado Springs.
A month after that, a school shooting left a teacher dead and another injured in California.
The next month, a teacher in Maryland was fatally shot by a gunman.
And last year, another school shooting killed two people, including a student.
The list goes on.
In 2016, a gunman killed four people in two separate shootings at a Florida elementary school and a Louisiana elementary school.
In 2017, a Florida teacher was shot and killed outside of her school in the middle of the night.
And in 2018, a student in Mississippi was fatally wounded in a shooting at a school.
The school year that ended in January 2017 saw at least 23 school shootings, according to the FBI.
“We’re going to have a very tough time explaining the senselessness of it all to our kids,” President Donald Trump said at the time.
In March, the Department of Education released a report that found that the number of school shootings had dropped from its peak of 1,726 in the spring of 2016 to fewer than 526 in 2017.
The numbers also showed that the majority of the shootings were not violent.
“I think what’s most concerning is the fact that there are very few cases that we know of where someone was killed by a school resource officer,” Adam Schiff, the top Democrat on the House Intelligence Committee, told Business Insider in March.
“What’s more concerning is that these are the kinds of incidents that are occurring in schools across America every single day.”
The majority of school shooters, according the report, are male.
But, in some cases, the perpetrators are white.
And according to data collected by the U.S. Bureau of Justice Statistics, the majority are black.
According to the National Center for Education Statistics, more than 75 percent of the incidents in the United States involving a school shooter in 2017 involved students of color.
A majority of these incidents were in schools with under 10,000 students.
One in five incidents occurred in a public or charter school, and one in four involved a charter or private school.
While most of the schools involved in school shootings have been targeted because of their demographics, some have been blamed for escalating racial tensions in America.
Last year, in a racially charged incident, a white police officer shot and critically wounded a black teenager who had allegedly pulled a gun on him.
The incident prompted calls for a national conversation about the police-community relationship, which the department said was an important factor.
But the Department for Education said the numbers on school shootings in 2017 did not provide any insight into the racial disparities in schools.
And, according on the Department’s website, “we know that race and ethnicity play a major role in the perpetuation of school violence.”