The lights dimmed, and a projector played a video you're familiar with if you're a Ravens fan.
As the projector played a highlight reel of the home team's "greatest hits", started to sing along to Diddy's "Coming Home", which has been adopted by the Ravens as their playoff run theme, leading up to a Super Bowl in Indianapolis.
Over 600 students, teachers and administrators gathered in the school gymnasium for a Purple Friday rally and each of them was, at one point or another, wearing a purple fu manchu mustache — the style worn by Ravens quarterback Joe Flacco.
Kids from pre-kindergarten all the way through 5th grade showed off their Ravens spirit, performing cheers, chants, poems and even a rap.
Check out the photos from the event in the gallery above.