It is every parent’s nightmare: You send your children to school, believing they’re safe, only to discover that they may have been the victim of a predator.

That’s the nightmare parents are dealing with at Judge Sylvania W. Woods Elementary in Prince George’s County, where police say a school volunteer has admitted to creating pornographic videos with children during school hours and on school grounds.

Deonte Carraway, 22, had been volunteering at Sylvania Woods Elementary in suburban Maryland since September. He has been charged with 10 counts of felony child pornography for creating dozens of videos in which he sometimes can be heard directing children ages 9 to 13 to perform sex acts, police said. Police said they have identified more than a dozen victims so far and anticipate identifying more as the investigation continues.

[Number of students police say were abused by school volunteer rises to 16]

Police have said that children were victimized at a number of locations, including in private homes, at the Zion Praise Tabernacle Lutheran Church in Bowie, the Glenarden Municipal Center, the Theresa Banks Memorial Aquatic Center and Judge Sylvania Woods Elementary, where Carraway volunteered.

Parents have many, many questions: How could a volunteer have been left alone and unsupervised with young students? Did other adults at the school know what was going on and fail to report it? How could no one have known? How could this be?

Officials have few answers at this point, saying they are investigating. But they held a meeting for parents at Sylvania Woods on Feb. 11 to field questions and address concerns.

[Md. parents demand answers as 12th victim identified]

The two-hour meeting drew hundreds of people, and reporter Lynh Bui’s tweets show how much anguish there was in the room.

Board Chair Segun Eubanks: "We know we are not going to fully regain your trust tonight" but problems are "being fixed." — Lynh Bui (@ByLynhBui) February 12, 2016

Schools CEO Kevin Maxwell says he will meet with all principals next week on reporting practices. Schools staff had training in August. — Lynh Bui (@ByLynhBui) February 12, 2016

First question is about whether there should be security out side of bathrooms. — Lynh Bui (@ByLynhBui) February 12, 2016

Schools security head says they will consider security and will add additional cameras at the school. — Lynh Bui (@ByLynhBui) February 12, 2016

Q3: Will school transfer my student at no cost if they are a victim. School says they will work with parents. — Lynh Bui (@ByLynhBui) February 12, 2016

"It is a personnel issue. I can't give you specific details at this time," HR head says after question about Carraway's hiring and bkground. — Lynh Bui (@ByLynhBui) February 12, 2016

Question: "How in the world did someone who is a volunteer have such access to children anytime that they wanted?" — Lynh Bui (@ByLynhBui) February 12, 2016

Kevin Maxwell: "I have some of those very same questions about how these things can happen when there are other adults in the school." — Lynh Bui (@ByLynhBui) February 12, 2016

Maxwell on how to prevent future abuse: "We're not sure, but we're hearing that people did not properly report things that were going on." — Lynh Bui (@ByLynhBui) February 12, 2016

Maxwell: "We are going to retrain every employee with the school system" on reporting practice. — Lynh Bui (@ByLynhBui) February 12, 2016

Q: "Can you tell me where was his supervision?" A: "We cannot discuss that part of the investigation." — Lynh Bui (@ByLynhBui) February 12, 2016

"We're going to stay until we finish all the questions," says @pgcps spox. — Lynh Bui (@ByLynhBui) February 12, 2016

Q: Who was his supervisor? A: "We cannot go into discussing anything around the investigation at this time." — Lynh Bui (@ByLynhBui) February 12, 2016

Maxwell: "It isn't just that we can't comment, we just don't know yet. We don't have all the answers to all the questions." — Lynh Bui (@ByLynhBui) February 12, 2016

Parents laugh and scoff after hearing again as an answer: "Right now there is an investigation going on…" — Lynh Bui (@ByLynhBui) February 12, 2016

Parent comment: "My son speaks of him (Carraway) very much since these findings and I am very scared." — Lynh Bui (@ByLynhBui) February 12, 2016

Parent comment: "My concern is that my child is a victim and I can't do anything to console him. My child still has the memories." — Lynh Bui (@ByLynhBui) February 12, 2016

Parent Q: "This didn't happen to my child, but she is scared to go to school now. How do we make her feel safe again?" — Lynh Bui (@ByLynhBui) February 12, 2016

What should parents do if they want to report and are scared about immigration status? Police: "We never check immigration status." — Lynh Bui (@ByLynhBui) February 12, 2016