Police said Charles Williams, 67, a South Huntington resident who teaches at J. Taylor Finley Middle School on Greenlawn Road, was arrested Thursday afternoon at his home on Dorchester Street and charged with second-degree sexual abuse.
He was released on bail and was scheduled to appear for arraignment March 31 in First District Court in Central Islip.
A woman answering the door Friday at Williams' home said he was "not available."
Police said Williams took the girl into a classroom on Jan. 26 so she could make a phone call, then "subjected the student to inappropriate sexual contact."
Police said the girl told a teacher what happened a short time later, and that teacher told school administrators and the Suffolk police school resource officer. An investigation by special victims unit detectives led to Williams' arrest.
A statement released by the district said, "The teacher has been reassigned to home until such time as the district has completed its internal investigation in coordination with police authorities."