MacArthur held its Olweus anti-bullying assembly in the West Middle School auditorium. It is the last Binghamton school to officially kick-off the program.
The old MacArthur was damaged by the September 2011 flood and had to be torn down.
The students are divided between two former Catholic school buildings in Binghamton and Hillcrest.
"I think that it's important, because of our situation, that there's one message for our school. And it's important that both schools are together hearing that message as one," said principal Maria McIver.
McIver decided to engage community members in encouraging the kids to combat bullying.
Attending the assembly were Binghamton Mayor Rich David, a Binghamton police officer and firefighter, and members of the Binghamton University men's and women's basketball teams.
And the event finished off with a flash mob.
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