A handwritten message was found on a bathroom wall threatening a shooting at the high school at 12:15 p.m. in Baldwin.
Baldwin High School and Brookside Elementary School were put in an emergency mode as a precaution. No students were being let into or out of the school until everything was lifted and returned to normal.
Earlier, Nassau police responded to George W. Hewlett High School in Nassau County after the report of a student with a gun.
School officials say someone passed a note that said a student had a gun. They brought the student to the attendance office, and no gun was found.
The lockdown was lifted and students returned to class.
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