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
Judd Krok
Ollie
Chase Dallas
Noah Flynn (Age 13)
Celina Caroto
Blonde Popular Girl
Ben Lillie
Geek
Megan du Plessis
Shelly 'Elle' Evans (Age 4)
Caitlyn de Abrue
Shelly 'Elle' Evans (Age 7)
Juliet Blacher
Shelly 'Elle' Evans (Age 11)
Morné Visser
Mr. Flynn
Hilton Pelser
Barry
Zandile Madliwa
Gwyneth
Bianca Bosch
Olivia
Trent Rowe
Biggest Geek in School
Chloe Williams
Joni Evans
Sanda Shandu
Randy
Waldemar Schultz
Mr. Lewis
Evan Hengst
Council President
Robbie Tucker
(uncredited)
Jesse Rowan-Goldberg
Lee Flynn (Age 11)
Lincoln Pearson
Lee Flynn (Age 4)
Michael Miccoli
Noah Flynn (Age 9)
Khanya Kerwath
Science Teacher