The first threat came Oct. 21, 2014, with a message scribbled on a bathroom wall.
A phone threat evacuated the school on Dec. 19, 2014, and canceled a basketball game in the high school gymnasium.
A third threat was made on Jan. 9 by email and a fourth on March 9, again by a message on a second floor boys' bathroom wall.
The Westchester County District Attorney's office confirmed Monday's arrest by Rye police and said they will prosecute the case.The FBI also was involved in the investigation.
An arraignment was scheduled Tuesday morning in Rye City Court.
Rye Central School District officials did not have an immediate comment.
Rye Police Lt. Scott Craig said more details would be released shortly.
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