A teenager who admitted planning a violent rampage at a Long Island high school had been picked on for living in a trailer park, his lawyer said.

The boy was "constantly being berated as trailer trash," lawyer Robert Gallo said. "He's not an evil child. ... He went through a lot to get where he is."

The boy has pleaded guilty to attempted conspiracy in Family Court. His sentencing was postponed Tuesday to Sept. 27.

The teen is frightened, remorseful and getting treatment at a psychiatric center, Gallo said.

"He's aware he was planning on doing some pretty serious things," the lawyer said. His client's name hasn't been released because of his age.

The 15-year-old had been suspended from school in an unrelated disciplinary case before his July 12 arrest. Connetquot Superintendent said Tuesday it was "unlikely he'll be back."

The boy and a 17-year-old, Michael McDonough, were accused of planning to buy weapons to shoot people and set off explosives at Connetquot High School in Bohemia. Police said they found notes about the plot, written by the 15-year-old, that referred to the 1999 massacre at Columbine High School in Littleton, Colo. Twelve students and a teacher were killed in that attack.

McDonough has been charged as an adult with misdemeanor conspiracy. He has pleaded not guilty and is free on $50,000 bond.

His lawyer, Robert Flick, has said McDonough was "barely" culpable in the alleged plot.