Jamie Kelly

Emily Alyn Lind

Isabella

Mary-Charles Jones

Angeline

Sterling Griffith

Claire Vanderhied (uncredited)

Natalie Alyn Lind

Hudson Rivers

David Mazouz

Assistant Principal Devon

James Waterston

Ms. Bruntford

Lea DeLaria

Jamie's Mom

Maddie Corman

Aunt Carol

Laura Bell Bundy

Mr. Vandoy

Tom Markus

Jamie's Dad

Jeffrey Hanson

Duane Stephens

Young Van Gogh

Anson Bagley

Miss Anderson

Jacque Gray

Old Office Lady 1

Marlys Miller-Fladeland

Old Office Lady 2

Marie Sharon

Boy Dancer

Ezra Sosa

Coach Dover

Dane Stevens

Bitter Old Office Lady

Jayne Luke

Mrs. Cutler

Joyce Cohen

Doctor

James Jamison

Nurse

Renny Grames

Important Person

Anne Sward

Boring Old Relative

Fred Schwab

Mrs. Clawson

Clara Susan Morey II

Janitor

Cameron Asay

Boy Dancer

Andrés Peñate

Ninja Dancer

Roger Malaga

Dancer

Bobby Amamizu

Man on Bus (uncredited)

Vaughn Travis