Since her daughter was killed in the Marjory Stoneman Douglas High School massacre last year, Lori Alhadeff has become an activist, and Alyssa’s Law has now been passed to make schools safer, says Letitia Stein.

The father of a student killed in a mass shooting at a Florida high school is suing the armed officer who stood outside the building as people were massacred within.

Officials at a Florida school rocked by a shooting massacre earlier this year are looking into claims that a teacher said a student was acting like Adolf Hitler.

A teacher at the Florida school where 17 people were shot dead has been arrested after authorities said he left a loaded gun in a public toilet, where a drunk homeless man picked it up and fired it.

The brother of the 19-year-old suspected of gunning down 17 people at a Florida high school has spent the night in jail after he was arrested for trespassing on the campus.

The former student charged with killing 17 people at a Florida high school last month remained silent in court and had a not guilty plea entered on his behalf as police released more recordings that captured the terror of the Valentine's Day slayings.

School students across the US left their classrooms to urge gun control and safety measures following a spate of massacres.

Thousands of students across the US are joining in a National School Walkout today on the one month anniversary of the mass shooting at a Florida high school that killed 17 people.

Florida Governor Rick Scott has signed a $400m school safety bill in response to the tragedy that killed 17 people at a high school.

Florida school shooting suspect Nikolas Cruz has been formally charged with 17 counts of first-degree murder.

The couple who provided a home to the Florida school shooting suspect before the Valentine's Day massacre has given evidence before a grand jury considering formal charges in the case.

One of America's biggest outdoor equipment retailers has said it will immediately end sales of assault-style rifles and will not sell guns to anyone under 21 years old following the school massacre in Parkland, Florida.

Classes have resumed at Marjory Stoneman Douglas High School for the first time since 17 students and teachers were killed by an expelled classmate with an AR-15 rifle, thrusting pupils into the centre of America's gun debate.

Donald Trump has claimed he would have rushed in to aid students and teachers during the deadly mass shooting at a Florida high school.

Oprah Winfrey has nothing but praise for the Florida school shooting survivors who have channelled angst into activism, calling them "warriors of the light" and comparing them to civil rights pioneers.

In the week since 17 of David Hogg’s classmates and teachers were gunned down in Florida, he and his fellow high schoolers have launched a movement that reshaped the gun control

President Donald Trump says arming teachers as a deterrent against school shootings is "up to States".

The Florida high school where a former student shot and killed 17 people has reopened for teachers as the community deals with claims that the armed officer on campus did nothing to stop the shooter.

The Florida high school where a former student shot and killed 17 people has reopened for teachers as the community deals with claims that the armed officer on campus did nothing to stop the shooter.

US president Donald Trump has defied many of his supporters in gun lobbying group the National Rifle Association (NRA) by saying assault rifles should be kept out of the hands of anyone under 21.

The student-driven movement to rewrite US gun laws showed no sign of waning a week after a gunman killed 17 people at a Florida school, with politicians yielding to pressure to respond.

Leaders of the National Rifle Association are accusing supporters of gun control of exploiting the mass school shooting in Florida to promote an anti-gun agenda.

US President Donald Trump has endorsed stricter gun control measures, including raising the minimum age to 21 for possessing a broader range of weapons than at present.

"Parents, what would you do if your child lectured and ridiculed a U.S. Senator on national television?"

President Donald Trump has said that if one of the victims of the latest school shooting in the US, a football coach, had been armed "he would have shot and that would have been the end of it".

Students and parents have delivered emotional appeals to President Donald Trump to act on school safety and guns after last week's mass shooting in Florida.

Thousands of protesters, including many angry teenagers, swarmed into the state Capitol of Florida on Wednesday, calling for changes to gun laws, a ban on assault-type weapons and improved care for the mentally ill.

Parents, teachers and students affected by school shootings over the past two decades have met President Donald Trump as the White House sought to show resolve against gun violence.

Survivors of the Florida school shooting have descended on the state legislature to deliver one overarching message on gun control: It is time for action.

US president Donald Trump has directed the justice department to move to ban devices like the rapid-fire bump stocks used in last year's Las Vegas massacre.

Students who survived the Florida school shooting began a journey to the state Capitol to urge politicians to prevent another massacre.

Latest:: Pupils from several Florida high schools have taken to the streets in a show of solidarity with students from a nearby school where 17 people were gunned down in their classrooms on Valentine's Day.

Some 100 students from Marjory Stoneman Douglas High School will travel 400 miles to Florida's capital on Tuesday to urge politicians to act to prevent a repeat of the massacre that killed 17 students and teachers last week.

Florida school shooting suspect Nikolas Cruz has appeared in court for a procedural hearing.

President Donald Trump has said that he "supportive of efforts to improve the federal background check system" for the purchase of guns.

Student survivors of the deadly Florida school shooting who hope to become the face of a revived gun control movement are on a potential collision course with US president Donald Trump.

Thousands of angry students, parents and residents have demanded stricter gun control laws, as new details were revealed about the suspect accused of killing 17 people in a Florida high school.

Florida's child welfare agency investigated the suspect in a school shooting that killed 17 people after he cut himself in a video, but found him to be stable, according to state records.

Florida governor Rick Scott has called on FBI director Christopher Wray to resign after learning that the bureau failed to investigate a tip-off that the Florida school suspect could be planning an attack.

US president Donald Trump came face-to-face with hospitalised victims from the horrific school shooting in Florida and offered thanks to the doctors and nurses who helped the wounded, declaring "the job they've done is incredible".

The FBI has admitted it was told last month that the Florida school suspect could be plotting an attack, but agents failed to investigate.

An Irish teenager was among those caught up in the terror of the Florida school shooting.

Florida governor Rick Scott has called on FBI director Christopher Wray to resign after learning that the bureau failed to investigate a tip-off that the Florida school suspect could be planning an attack.

The names of the victims of the shooting massacre at the Marjory Stoneman Douglas High School in Parkland, Florida, on Wednesday have begun to emerge.

At least 1,000 people have attended a candlelight vigil for the 17 victims of a school shooting in Florida.

An orphaned 19-year-old who participated in paramilitary drills with a white nationalist group has been charged with murder over the deaths of 17 people who were shot at a Florida high school.

An American football coach who also worked as a security guard is among the dead in a school shooting that claimed 17 lives in Parkland, Florida.

"It doesn't seem to matter to our government that children are being shot to death day after day in schools."

The suspect in a deadly rampage at a Florida high school is a troubled teenager who posted disturbing material on social media before the shooting spree that killed at least 17 people, according to police.