Another American school shooting has made international headlines after 17 people were killed north of Miami, Florida.
But this is far from the first school shooting in the United States so far this year.
The Everytown for Gun Safety Support Fund says America has averaged one school shooting a week since 2013, based on the definition "any time a firearm discharges a live round inside a school building or on a school campus or grounds".
In 2018 so far the rate has been far higher, with Everytown putting the number of school shootings at 17 before the Florida attack.
Not all of the shootings resulted in injuries or deaths. But here are five that did.
A 15-year-old girl was shot in a Texan school cafeteria on January 22, 2018
She was shot by a 16-year-old classmate at a school in the small town of Italy.
The shooting sent dozens of students in the cafeteria scrambling for safety.
"I was pretty scared," Edgar Eduardo Rodriguez, a 15-year-old student, told KWTX News.
"This is a small town, you know? I never imagined it."
Police told reporters that the shooter was confronted by a school staff member. The 15-year-old was recovering in hospital and in "good spirits" after the shooting, officials said.
"It is an amazing demonstration of her strength that she was able to survive this," school district superintendent Lee Joffre said.
Two students were shot dead when a classmate opened fire on January 23, 2018
This was the first fatal school shooting of 2018. A 15-year-old student fired a handgun at classmates at the rural Marshall County High School in Kentucky.
"He was determined. He knew what he was doing," said Alexandria Caporali, a student who grabbed her stunned friend and ran into a classroom during the attack.
Two 15-year-old students — a boy and a girl — died and seventeen students were injured.
Ms Caporali said the shooter kept firing until he ran out of ammunition and took off running, trying to get away.
Police arrested a suspect moments later, leading him away in handcuffs to be charged with murder and attempted murder.
A man was killed on January 31, 2018
Abraham Lincoln High School in Philadelphia went into lockdown after a fight and gunshots were reported in the parking lot outside a basketball game.
Police say a 32-year-old man was shot twice in the leg and later died of his injuries.
A boy was shot in the head on February 1, 2018
The facts about America and guns
- There are almost as many guns (300 million) in the US as people (population: 323 million). This is twice as many guns per capita as 50 years ago.
- Americans represent 4.5 per cent of the world's population yet own 48 per cent of the world's privately held guns.
- Not all Americans are gun-lovers. Fifty per cent of all guns are in the hands of just 3 per cent of the population.
- The average gun-owning household has 8 guns.
Four students were injured at Sal Castro Middle School in Los Angeles when a gun went off in a classroom.
A 12-year-old boy was shot in the head, a 15-year-old girl was shot in the wrist, and three others received minor injuries. The boy was expected to recover.
Police reportedly believe the handgun fired from inside a backpack. A 12-year-old girl was questioned by police.
A 17-year-old boy was shot and taken to hospital on February 5, 2018
The student at Oxon Hill High School in Maryland was shot in the upper body when he went outside to meet people in a vehicle who police say tried to rob him.
Police told The Washington Post that he was in a critical but stable condition and expected to survive. Two teenagers were charged with attempted murder.