There was a random Code Blue declared somewhere around 11 PM at 4th Period, then eventually they announced to shelter in place and evacuate. Cops started evacuating everyone one classroom at a time, the police had a perimeter and the cops inside the campus were armed shotguns and rifles. I'm getting conflicting reports so far on why there was an evacuation, but its apparently either something about a suspicious white male on campus or a student hearing a serious threat. I finally got a ride home 1-2 hours after my classroom was evacuated.
On the bright side, school is cancelled and I don't have 4 tests/quizzes from my classes on the same day.