Teen pulls gun on fellow student at Manhattan high school as another shoots out windows at SI school

A student threatened another boy with a gun at a public high school in the West Village on Monday, while someone shot out the windows of two classrooms at a Staten Island elementary school, cops said.

One of the targeted classrooms at PS 78 in Staten Island’s Clifton section had 10 adult students inside at the time, police said. No one was injured. The other classroom was unoccupied. 

In the troubling incident in Manhattan, an 18-year-old pulled a black revolver on a 17-year-old fellow student inside High School M560-City As School on Clarkson Street before running off around noon, cops said.

No one was injured, and it was unclear whether the gun was loaded.

Cops have identified the 18-year-old and are trying to locate him. Police sources said the teen often doesn’t attend school.

About a half-hour later, at 12:30 p.m., someone shot out the first-floor windows in the two classrooms at the Staten Island school on Hill Street. That suspect fled in a car.

Staten Island District Attorney Michael McMahon said Tuesday the gunshots were the result of “crew on crew crime.”

“Shots were fired across the courtyard of the Stapleton houses which is adjacent to the school and two windows in the school were blown out,” he said. “The kids had just left the classroom.”

McMahon said he wants to see the perpetrators charged and also wants more school safety officers.

Both incidents involve just the latest violence in and around city schools.

A 37-year-old security guard was wounded along with two teens in a shooting last week outside Williamsburg Charter High School in Brooklyn.

The private guard, who was hired by the school, was grazed in the neck by a bullet as he tried to break up a melee during afternoon dismissal Wednesday. 

Video footage taken at the scene showed kids wildly throwing punches in the street before at least four shots were fired.