The Ravenclaw staircase is a staircase located in Ravenclaw Tower. At the top of the staircase, a door leads to a corridor that has the entrance to the Ravenclawcommon room and overlooks a courtyard.[1]
During the Battle of Hogwarts, students (presumably of Ravenclaw House) are running up and down the staircase before the battle begins. Harry Potter used the staircase when he was looking for the Ravenclaw common room.[2]