STATEN ISLAND, N.Y. -- A second teacher and four teaching assistants have been fired in connection to a verbal abuse scandal that rocked a Tottenville special-needs preschool.

Those five staff members were terminated from the Volunteers of America (VOA) Early Learning Center on Jolene Lane, a Volunteers of America-Greater New York (VOA-GNY) spokeswoman said after additional evidence was reviewed it was announced Monday.

"Their unconscionable behavior is contrary to everything that Volunteers of America stands for," VOA-GNY President and CEO Tere Pettitt said. "For this we are deeply sorry."

The main teacher in the classroom where the abuse allegedly took place was terminated, according to the VOA spokeswoman. Now the Advance has learned a second teacher was fired because she allegedly was aware of the actions and failed to report them. They were both fired Aug. 13.

Multiple parents involved in meetings at the school told the Advance in an exclusive interview Wednesday that the controversy began when a concerned mother sent her son to school with a recording device in a backpack because she felt he wasn't acting like himself.

They said the boy's parents felt he was agitated, acting out, not wanting to go to school and using foul language.

The recordings, taken over several days, allegedly captured staffers verbally abusing the children, calling them names and using foul language.

The mom behind the recordings sent a group text to the other parents in her son's class to alert them to the situation, the parents said.

They said the recordings, taken over four days, revealed the students were called "morons" and told "you f------ smell," "get f----- away from me, you stink" and "you're staying in your s----- diaper all day."

In her statement, Pettitt thanked the parents for their involvement in the investigation.

Remaining staff has undergone "rigorous retraining," and VOA-GNY is examining the possibility of placing video cameras in the classrooms along with reevaluating its open-door parental visit policy.

"VOA-GNY is working hard to make sure that something like this never happens again," Pettitt said.