WTAE-TV reported the drill was designed "look and feel like a real emergency" by simulating how police would react if a gunman entered a high school.
“You can never be completely prepared for every situation, but we are trying to do what we can to be familiar with the school and keep the officers fresh with their training,” South Fayette Township patrolman John Leininger told WTAE-TV.
The training, which included officers from CharWest Council of Governments was similar to an active shooter drill performed by many area police departments at Chartiers Valley High School last January, and at Robert Morris University in July 2011. Other police departments that participated in Wednesday's drill included Carnegie, Moon Township and Robinson.
Students were not on campus at the the time of the day-long training exercise, due to winter break, according to the Post-Gazette.