The former New York mayor has made gun control one of his key 2020 campaign pledges.
Brian Groner, 27, has been charged with making a terroristic threat three months after he was first charged with the same crime because of statements he allegedly posted about the Columbine massacre.
Two students were killed and three injured at a high school in Santa Clarita, California, on Thursday by a student shooter.
A study released Thursday by the Secret Service's National Threat Assessment Center concludes that school shooters often displayed warning signs before carrying out their deadly attacks.
"I looked at the gun, realized it was a real gun and then my instincts just took over," Keanon Lowe said.
An article from satirical news site "The Onion" sparked fears in a Pennsylvania school when a real picture of the school appeared in the article.
"Survive the school year with these must-have #BackToSchool essentials," the group Sandy Hook Promise tweeted. "This PSA contains graphic content."
Paul A. Steber, a 19-year-old freshman, was arrested by police after campus authorities found firearms and ammunition in his dorm room. He allegedly later confessed to authorities that he had a "plan and timeline to kill people."
"If I go to [the school] and I want to be an active shooter, I'm going in knowing I have reduced sightlines," the Superintendent said.
Are we really willing to make body armor our main "solution" to the epidemic of gun violence? We need to talk about prevention.
"My message to children going back to school is go and really study hard and someday you'll grow up and maybe be President of the United States or do something else that's fantastic," Trump said.
I submitted my son Joaquin's basketball shoes. Before he was murdered in the Parkland school shooting, he wanted me to coach his basketball team.
The teen reportedly told Siri "I'm going to shoot up a school" and in response, the Apple virtual assistant identified several schools in Valparaiso near his location.
The principal said she hoped the students would keep the shields with them in high school.
Trump flew into Houston, Texas, for the private meeting.
"I think that as a kid and certainly as parent, there is nothing that could be more terrifying than for a kid to go to school and not feel safe," Sanders said.
Dimitrios Pagourtzis was arrested May 18 and charged with capital murder of multiple persons, according to the Galveston County Sheriff's Office.
Former Education Secretary Arne Duncan proposed that parents hold a nationwide boycott of schools until U.S. gun laws are changed to protect students.