A teacher’s assistant has been ordered to stay away from the Harbor Pilot Middle School in Dorchester after his arraignment for alleged improper activity with a child there this week, Suffolk County District Attorney Daniel F. Conley said.

LaSHAWN HILL (D.O.B. 3/10/78) of Dorchester was formally charged today with lewd and lascivious conduct, a misdemeanor punishable by up to six months in a house of correction. The charge stems from an incident Monday afternoon at the school.

Assistant District Attorney Leora Joseph, chief of Conley’s Child Protection Unit, recommended that Hill also be held on $10,000 cash bail. Judge Michael Coyne imposed that amount.

Joseph told the court that a school employee came upon Hill and a 14-year-old male student alone in a room with their pants unfastened. The evidence at this point does not indicate that Hill indecently assaulted the child, who is autistic and non-verbal. Hill allegedly made statements incriminating statements that he was teaching the boy about masturbation.

“This incident and other potential incidents involving children require a careful, methodical, and child-friendly approach if we’re to build a sound legal platform for the case,” Conley said. “We’ve assembled a multidisciplinary team that can have meaningful interviews with a nonverbal child. The protection of children is at the heart of this investigation.”

Hill’s arraignment on these charges came a day after he was held on $3,500 cash bail on larceny charges stemming from the theft of five laptop computers from the same school. Hill allegedly signed for the delivery of 14 such computers at the school on Monday, but only nine were on hand when school officials noticed the discrepancy and contacted Boston School Police on Tuesday.

The computers were recovered from a vehicle belonging to an associate of Hill after State Police responded to a motor vehicle collision on Morrissey Boulevard on Wednesday evening. Hill allegedly made statements implicating himself in the thefts.

Hill is represented by attorney Stephanie Soriano on the larceny case and Jennifer Doherty on the lewd and lascivious charges. He will return to court on Jan. 6.