Jack Black
Dewey Finn
Acting
Joan Cusack
Rosalie Mullins
Acting
Mike White
Ned Schneebly
Writing
Sarah Silverman
Patty Di Marco
Acting
Miranda Cosgrove
Summer Hathaway
Acting
Joey Gaydos Jr.
Zack
Acting
Kevin Alexander Clark
Freddy Jones
Acting
Rivkah Reyes
Katie
Acting
Robert Tsai
Lawrence
Acting
Maryam Hassan
Tomika
Acting
Aleisha Allen
Alicia
Acting
Caitlin Hale
Marta
Acting
Brian Falduto
Billy
Acting
Z Infante
Gordon
Acting
James Hosey
Marco
Acting
Angelo Massagli
Frankie
Acting
Cole Hawkins
Leonard
Acting
Lee Wilkof
Mr. Green
Acting
Kate McGregor-Stewart
Mrs. Lemmons
Acting
Adam Pascal
Theo
Acting
Lucas Babin
Spider
Acting
Lucas Papaelias
Neil
Acting
Chris Stack
Doug
Acting
Suzzanne Douglas
Tomika's Mother
Acting
Jordan-Claire Green
Michelle
Acting
Veronica Afflerbach
Eleni
Acting
Jaclyn Neidenthal
Emily
Acting
Eron Otcasek
Musician
Acting
Carlos Velazquez
Musician
Acting
Kimberly Grigsby
Mrs. Sheinkopf
Acting
Wally Dunn
Gym Teacher
Acting
Tim Hopper
Zack's Father
Acting
Michael Dominguez-Rudolph
Art Student
Acting
Crash Cortez
Max
Acting
Nicky Katt
Razor
Acting
John Highsmith
Tony
Acting
Heather Goldenhersh
Sheila
Acting
Timothy "Speed" Levitch
Waiter
Acting
Scott Graham
Punk Rock Guy
Acting
Sharon Washington
Alicia's Mother
Acting
Kim Brockington
Leonard's Mother
Acting
Marty Murphy
Concerned Father
Acting
Kathleen McNenny
Freddy's Mother
Acting
Joanna Adler
Summer's Mother
Acting
Robert Lin
Lawrence's Father
Acting
Barry Shurchin
Cop
Acting
MacIntyre Dixon
Bus Driver
Acting
Amy Sedaris
Mrs. Haynish
Acting
Mary Fortune
Teacher's Assistant
Acting
Mandy Siegfried
Female Employee
Acting
Elle Key
Concert Goer
Production
Carlos J. Da Silva
Security Guard
Acting
Ian O'Malley
Radio Exec
Acting
Chris Line
Radio DJ
Acting
Kyle Meaney
Toby
Acting
Frank Whaley
Battle of the Bands Director (uncredited)
Acting
Lauren Adler
Concert Goer (uncredited)
Acting
Kelly Anne Burns
Groupie (uncredited)
Acting
Leanne Cabrera
Concert Goer (uncredited)
Acting
Catherine A. Callahan
Concert Goer (uncredited)
Acting
Cedric Cannon
Leonard's Dad (uncredited)
Acting
Jane DeNoble
Billy's Mom (uncredited)
Acting
Caileigh Scott
Concert Goer (uncredited)
Acting
Riley G. Matthews, Jr.
Blood Brothers MC Biker (uncredited)
Acting
Ryan O'Connor
No Vaccancy's Biggest Fan (uncredited)
Acting
Scott Ross
Concert Goer (uncredited)
Acting
Johnny Sullivan
Guy in Crowd Who Catches Dewey (uncredited)
Acting
Jamie Vergan
Concert Goer (uncredited)
Acting
Joe Wachowski
Concert Goer (uncredited)
Acting