 The school's mascot, the bulldog, gained school-wide acceptance around 1912.Centennial uses a variation of the University of Wisconsin fight song, which is sung as "On Centennial," for the school's fight song.Centennial won the first recognized Colorado state high school football championship in 1904, and has won three other state football championships since then, as well as championships in cross-country (seven) and basketball, golf, tennis, and cheerleading (one each).