A man was shot twice when bullets flew outside a Brooklyn public school late Monday evening, cops said.

The 47-year-old victim was shot once in the back and once in the arm outside PS 678 East New York Middle School of Excellence in East New York at 4:45 p.m., according to police.

He was rushed to Brookdale Hospital in stable condition.

Three suspects dressed head-to-toe in black fled on foot following the shooting, cops said.

There have been no arrests. The investigation is ongoing, police said.