The school enrolled 3,208 students between grades nine and 12, according to the Sun-Sentinel.
The superintendent of the county s school district, Robert Runcie, said he believed there were "numerous fatalities", and that the gunman may have been a former student. "It's just a terrible day for us.we have no evidence at this point there was more than one shooter". Three more were killed just outside the school and another two died of their injuries after being taken to the hospital, Broward County Sheriff Scott Israel said.
The shooter killed or injured at least 14 people before being apprehended by authorities.
A woman consoles another as parents wait for news.
A total of 17 people, including the suspected gunman and the two victims who died later, were taken to local hospitals.
At least 14 people have been injured in a shooting at a Florida high school, USA authorities said.
It followed scenes of students frantically running from the building and ambulance crews treating people outside the school on Wednesday afternoon.More news: The questions Barnaby Joyce faces
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The shooter however is still at large and the Broward Sheriff's Office is actively launching a manhunt for him.
The Broward sheriff said that the parent staging area is at the Marriott 11775 Heron Bay Boulevard in Coral Springs.
Rosenblatt said that her daughter made the connection after the shooting, when she visited the purported Instagram account of the shooter.
"Praying for all those students, families and school members affected at Marjory Stoneman Douglas High School".
Officers told students to look forward as they evacuated, but Dykes told the newspaper that he saw several bodies in a classroom. Students were seen being led across the street with their hands over their heads. There are police sirens outside.
The school was locked down as some students were escorted outside, while others were advised to remain barricaded inside.
Those words came at 2.30pm local time on Wednesday.
"I told her, 'Don't call me, because I don't want no one to hear your voice.' So, she's still trapped in a closet in there".