Kevin Nealon as Franklin Fitz

Zachery Ty Bryan as John Scaduto

Jessica Steen as Celia Shine

Rashaan Nall as Peter Heath (as Rashaan H. Nall)

Kurt Fuller as Principal Frank Hockenberry

Ellie Harvie as Miss W. Fassle

Laurie Murdoch as Vice Principal Ralph Calder

Emmanuelle Chriqui as Roxanne

Carlos Jacott as Oliver

Bill Nye as Science Teacher

Douglas Newell as Math Teacher

Robin Douglas as Biology Teacher

Walter Marsh as Dr. Vernon Baxter

Christopher Gaze as Hamlet

Carly Pope as Student

Veena Sood as Reviewer #1

Zachary Carlin as Sugerman

Andre Benjamin as Paramedic

A.J. Bond as Student Counsel

Claudio Masciulli as Kitchen Staffer

Dolores Drake as Mail Woman

Madeline Elder as Ruth

Daphne Goldrick as Health Teacher

Sarah Hayward as Nurse

Mitchell Kosterman as Paramedic

Richard Leacock as Paramedic

Allan Lysell as Ross

Douglas Newell as Math Professor

Veena Sood as Reviewer

Danny Steele as Waiter

Amber Warnat as Quiet Kid

Jonathon Young as Librarian

Eric Breker as Paramedic