Joey King
Elle Evans

Joel Courtney
Lee Flynn

Jacob Elordi
Noah Flynn

Molly Ringwald
Mrs. Flynn

Stephen Jennings
Mike Evans

Carson White
Brad Evans

Meganne Young
Rachel

Frances Sholto-Douglas
British Beauty

Nathan Lynn
Yearbook Guy

Byron Langley
Warren

D. David Morin
School Principal

Dan Elijah Rudin
Sneezer

Jessica Sutton
Mia

Michelle Allen
Multi-Pierced Girl

Joshua Daniel Eady
Tuppen

Morné Visser
Mr. Flynn

Hilton Pelser
Barry

Zandile Madliwa
Gwyneth

Bianca Bosch
Olivia

Chloe Williams
Joni Evans

Waldemar Schultz
Mr. Lewis

Evan Hengst
Council President

Robbie Tucker
(uncredited)