BREWSTER (CBS) – A Brewster elementary school teacher has been charged with sexually assaulting at least two students at school.

Parents contacted Brewster Police about incidents allegedly involving 36-year-old Noah Campbell-Halley. The Harwich resident is a technology teacher at Stony Brook Elementary School.

Police say they learned of additional victims during their investigation. Detectives conducted interviews with the students.

On Thursday, Campbell-Halley was arrested. He was arraigned on three counts of indecent assault and battery of a child, two counts of child rape, and one count of intimidation of a witness.

Prosecutors say the teacher pulled the kids out of class and attacked them in a room used for computer servers. The boys had a name for the room, according to prosecutors. “That room, what we’d characterize as the room in question, that several of the kids described as the dark room, where the teacher defendant would take these students and where the touchings in question took place,” prosecutor Ben Vaneria said.

Campbell-Halley has been a teacher in Brewster for six years and has no record.

He was ordered held on $25,000 cash bail and ordered to stay away from victims, schools, playgrounds and parks. Campbell-Halley must also wear a GPS monitoring device if released. The charges carry a life sentence.

A meeting for parents was held at the school Thursday night. Parents were desperate for answers about how this could have happened, and looking for guidance on what to tell their very young children.

Hundreds of parents heard from the superintendent of schools and the police chief, and also from professionals from the Children’s Cove, which is an advocacy group for kids’ safety on the Cape and Islands.

Investigators couldn’t go too specifically into details of the charges against Campbell-Halley. The speakers mostly discussed warning signs to look for in kids’ behavior, and how to talk to their kids about what happened and protecting themselves.

Parents outside the school told WBZ they needed more.

“How could they not know?” asked parent Nicole Carvahlo. “I mean the children called it the ‘dark room.’ I’m horrified.”

“My son was a student of his and he seemed so normal, so then it makes you think if he can be so normal, what else can be going on with other teachers that act just as normal as he did,” said parent Pauline Henry.

Psychologists will be at the school on Friday.

A Department of Children and Families spokesman said the organization has received a report and is investigating.

Campbell-Halley has been placed on administrative leave. He is due back in court on April 20.