WOONSOCKET — A feud between two 13-year-old girls resulted in a melee involving four girls, two mothers and a teacher outside Woonsocket Middle School Monday afternoon.

One mother drove her already-suspended daughter to the school to fight one of the other girls, officials said.

“She was with Mom across the street at dismissal time waiting for this particular girl,” said Woonsocket Middle School Principal Patrick McGee, who called the entire event “beyond ridiculous.”

“So-called adults behaving like this, to say it’s disappointing would be an understatement,” he said.

The fracas was the latest in a number of troubling incidents occurring at the school — New England’s largest middle school — which houses 1,500 students. On Friday, two girls, ages 14 and 13, were arrested for fighting after school while several students watched. Both were charged with disorderly conduct.

In 2004, 13 students were suspended for assaulting teachers and 170 students were suspended for assaulting each other.

After Monday’s incident, mothers Maribel Santiago, 34, of 75 Village Rd., and Ana Rivera, 44, of 241 Park Ave., were arrested and charged with simple assault for their involvement in the fight. Their daughters and two other 13-year-old girls were arrested and charged with disorderly conduct. Their cases were turned over to the Juvenile Detective Division.

Both Santiago and Rivera were released on $1,000 bail Monday evening, but Detective Lt. Timothy Paul said the department intends to notify the state Department of Children, Youth and Families about Rivera, who allegedly drove her daughter to the school so she could fight Santiago’s daughter.

According to police reports, Rivera’s daughter and Santiago’s daughter had a conflict that began two weeks ago, and that Rivera’s daughter had been making threats to Santiago’s daughter, saying that the girl and her sister would be jumped Monday after school.

The report states that the girls’ mothers arrived at the school around 2 p.m. to “prevent/participate” in the fight between their daughters. Paul said the girls began fighting and Santiago’s daughter “was getting the better of” Rivera’s daughter, causing Rivera to intervene and assault Santiago’s daughter.

Reports state that Robert J. Picard, a teacher at the school, attempted to break up the fight and was hit by Santiago.

Rivera’s hand was allegedly cut by a razor in the incident, but officers have not recovered the weapon and do not know who brought it to the fight.

Officers responding to the scene Monday afternoon encountered several hundred children and adults, and said that girls yelled and threatened Rivera’s daughter as she was led to a police vehicle. The police ordered the girls to stand back, and eventually arrested two other 13-year-olds who continued to scream at and threaten the girl.

Officials would not say why Rivera’s daughter had been suspended previously, or how the conflict between Santiago’s and Rivera’s daughters began, but McGee said that Eighth Grade Assistant Principal Linda Kuras has been working with the two girls to mediate their differences.

Unfortunately, McGee said, he can’t prevent parents from acting inappropriately themselves.

“In this situation, the parents did not help the process. In fact they made it much worse,” he said.

McGee, who held a faculty meeting to inform staff of Monday’s brawl, stresses that the school is safe.

“People see one incident and they say, ‘it’s not safe,’ and that couldn’t be further from the truth,” he said.

In response to Monday’s incident, the police, who normally patrol school grounds when school lets out at 1:50, were out in force yesterday. At least four police vehicles — including a police van — and a dozen police officers were on hand as the eighth-grade students filed out. Among the officials were Police Chief Michael L.A. Houle, Deputy Chief Richard Dubois and Public Safety Director Michael Annarummo.

“We’re making a police presence here to make sure that yesterday isn’t repeated,” Dubois said yesterday.

There were no disruptions yesterday as students boarded buses and headed home. Houle said he is meeting today with Supt. Maureen B. Macera to brainstorm ways to get students on the same page in terms of proper school behavior. He also plans to send letters to parents regarding Monday’s incident, and to maintain an increased police presence for an undetermined amount of time.

“We’re going to have zero tolerance. We’re going to have zero tolerance for weapons and zero tolerance for fighting,” Houle said.

Macera said she will address school officials and parents about the fight at tonight’s School Committee meeting.

“I will do everything in my power to see to it that adults that want to create violence in our schools refrain from doing so, even if it means getting a restraining order so they are not on school grounds,” she said.

Macera said the idea of a parent driving a child to school with the express purpose of intimidating or harming another student was “unimaginable.”

“When you have adults coming on school grounds to participate, encourage or engage in violence, that’s domestic terrorism,” she said.