Rob Riggle, Lauren Graham Enroll in ‘Middle School: The Worst Years Of My Life’

Other cast members in adaptation of James Patterson’s best-selling series include Thomas Barbusca, Andrew Daly, Adam Pally and Efren Ramirez

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Rob Riggle and Lauren Graham have been cast in the big-screen adaptation of James Patterson‘s best-selling series, “Middle School,” CBS Films announced Thursday.

The film is set to arrive in theaters in October 2016. Other cast members include Thomas Barbusca (“Wet Hot American Summer: First Day of Camp”), Andrew Daly (“Black-ish”), Adam Pally (“The Mindy Project”), Efren Ramirez (“Napoleon Dynamite”), Isabela Moner, Alexa Nisenson and Griffin Gluck.

The first part of the series, “Middle School: The Worst Years of my Life,” follows Rafe Khatchadorian (Gluck) as he battles bullies, hormones and the tyrannical Principal Dwight (Daly). Graham will play Rafe’s mother Jules, with Riggle playing her boyfriend, Bear.

Steve Carr will direct the film from a screenplay by Chris Bowman, Hubbel Palmer and Kara Holden. Producers are Leopoldo Gout and Bill Robinson, with Patterson and Steve Bowen executive producing for James Patterson Entertainment.

Jeff Skoll and Jonathan King of Participant Media also serve as executive producers along with Michael Flynn.

The six-book series has sold almost seven million copies worldwide and ranked on The New York Times bestsellers list for a combined 68 weeks.

“Over the years, I have had the privilege to meet countless ‘Middle School’ fans, and I know that today they are just as excited as I am by this incredible cast,” Patterson said. “Speaking for everyone involved in this project, we are going to give those fans the movie that they deserve.”

Patterson will co-finance the film with Participant Media and CBS Films. Robert Kessel is overseeing the title for Participant; Scott Shooman is overseeing the project for CBS Films.

“Middle School” will being production in Atlanta later this month and will be distributed in partnership with Lionsgate.