I feel something's peering over me.
—Mullins to Dewey.

Principal Rosalie Mullins is the principal of William B. Travis Prep School. She was a recurring character in Season 1, but was promoted to a main character from the second season of School of Rock.

She is portrayed by Jama Williamson.


Principal Mullins is a strict nugget trying to understand herself as a principal. She has Dewey to help her but will she find out about the band?


Season 1

Season Appearances: 8/12

Season 2

Season Appearances: 10/13

Season 3

Season Apperances: 15/20

Overall Appearances: 33/45


Okay, children, quiet coyote. Mouth closed, ears open.
—Principal Mullins (Voices Carry)


  • She is different to the principal in the School of Rock movie.
  • She is shown to be very attractive and beautiful.
  • She has one Cat.
  • She was a recurring character in Season 1 and a main character in Season 2 and 3.
    • Despite being promoted to a main character, she still averaged an absence every three to four episodes. She is the only main character to be absent or to make a cameo in any episode. As a main character, she was absent for eight episodes.
  • She dyes her hair to get rid of any gray hair someone could spot on her head. (We're Not Gonna Take It).
  • She spent her Summers as a dog groomer in High School (Changes).
  • It is implied that she might have feelings for Dewey. (Is She Really Going Out with Him?).
  • She is allergic to Dogs. (Puppy Love).
  • She is an avid collector of anything that's related to a whale. (Don’t Know What You Got (Til It’s Gone)).
  • Her favorite type of pie is rhubarb pie. (Surprise, Surprise).
  • Her birthday is March 4th, which she shares with Freddy. (Surprise, Surprise).
  • She once had a boyfriend named Kenneth, but they broke up. (Photograph).
  • Her first name is revealed many times to be Rosalie.
  • In the series finale, she eventually finds out the identities of School of Rock but doesn’t seem to mind.


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