School of Rock, The (2003) - Cast

Jack Black as Dewey Finn
Mike White as Ned
Joan Cusack as Principal Mullins
Mary Fortune as Teacher's Assistant (uncredited)
Sarah Silverman as Patty
Kevin Alexander Clark as Freddy Jones (drummer)
Miranda Cosgrove as Summer Hathaway
Joanna Adler as Summer's Mom
Lauren Adler as Concert Goer
Michael Fewx as The Dork
Joey Gaydos as Zack
Cole Hawkins as Leonard
Riley G. Matthews Jr. as Blood Brothers MC Biker