Police “secured the student and the weapon,” spokesman Michael Lawrence told CNN. All the students and faculty are safe, he said.
It was not immediately clear to school officials what the weapon was and what charges, if any, the student could face.
The school district will send a mental health team to the campus, Lawrence said, and “law enforcement will remain on campus because they have an ongoing investigation to conclude.”
Altamonte Springs is about 11 miles north of Orlando.