Rochester police are looking for the person, or persons, who fired a gun at a 16-year-old outside Franklin High School.
It happened around 8:30 this morning.
Police say there was some sort of incident off campus, and the teen ran toward the school on Norton Street.
At least one person followed and opened fire.
The student got inside and the gunman ran off.
No one was hurt.
The school district says the school was placed on lockout as a precaution, and police will be present for arrivals and dismissals through tomorrow.