For eight years, School Safety Agent Rosemary Fuentes was among the members of the thin blue line who helped keep the peace at Manhattan Center Math and Science High School at 116th St. and FDR Drive in East Harlem.

Trouble erupted at the school Sept. 20, however, and Fuentes was one of those assaulted in a melee that possibly involved as many as 200 students.

Despite injuries that have made it impossible for her to return to work — and which also threatened the birth of her first child — Fuentes has had to dig into her meager savings to make ends meet. The New York Police Department, of which School Safety is a part, has paid her nothing since the incident occurred.

Fuentes was on duty at about 11 a.m. on the third floor of the school when two female students got into a fight. Fuentes immediately called for assistance before she and a dean separated the two teenagers.

“I called for backup three times,” Fuentes recalled, “but we were short-handed two workers that day.”

One girl slipped out of the dean’s grasp and ran toward the student being held by Fuentes. The second girl broke out of the officer’s grip and the two began to wrestle. As they grappled, Fuentes again radioed for assistance before attempting to break up the fight.

Hundreds of students, hearing the disturbance, jammed the halls to see what was going on.

While trying to subdue the grappling students, Fuentes was knocked to the floor, and was surrounded by a sea of students. As she was lying face down on the school corridor floor, someone in the crowd kicked her in the back as she tried to shield the female student. Then her hair was pulled and punches began to rain down on her face.

Fuentes, disoriented and still without backup because of the density of the crowd, yelled for help.

“I tried to get up but fell to the floor, unconscious,” Fuentes said. “A teacher named Audrey O’Shea Mangan and my co-worker, SSA Brenda Luciano, ran to my aid. SSA Oscar Jackson and two other co-workers also ran to help me.”

Mangan made her way through the crowd and finally got to Fuentes. “I would have not made an attempt to move her except that a mob situation had developed and Agent Fuentes was about to be trampled,” Mangan said.

Fuentes said they managed to pull her from beneath the mound of milling students and helped her to a chair, semiconscious. “When I awoke,” she said, “I had pain in my body, particularly in my mid-back, my head and my knees. My body was in shock.”

With the aid of Mangan and Agent Luciano, Fuentes made her way to the dean’s office. When Sergeant Angel Hernandez arrived, he informed his commanding officer that Fuentes had been hurt in the assault and was going to the hospital.

When EMS came, Fuentes tried to walk to the elevator but as she did so, she felt her right knee pop. She still faces a possible operation to repair her knee injury.

EMS took her to Metropolitan Hospital where doctors determined that Fuentes was six weeks pregnant, bleeding, and in danger of losing the baby, which is due May 5.

Fuentes is still going to doctors, twice to three times a week for physical therapy. She has torn ligaments in her knees, possible fractured ribs and pain in her lower back.

Local 237 has filed a grievance on her behalf. She has been denied compensation due her under the contract clause relating to injuries suffered in assault while on duty.