KIDS (10-13 years of age, 5th grade)
Summer Hathaway (Band Manager) Vocal Range (A3-D5): Summer is a high-achieving girl who hates nonsense. Initially, she absolutely despises Dewey, but comes to love the band—or, perhaps, the power that comes with it—and is willing to do anything to see it achieve. Summer is one of the brightest students at Horace Green. Throughout the show, she is convinced that winning the "Battle of the Bands" will look good on her college application.

Zack Mooneyham (Guitarist) Vocal Range (A3-D5): Zack is the band’s lead guitarist and a talented songwriter. He desperately wants to impress his father, who’s usually too busy with work to take an interest in his family. Must play guitar onstage.

Freddie Hamilton (Drummer) Vocal Range (A3-D5): Freddy is a rambunctious boy, as shown when he repeatedly slams cymbals together disruptively during music class. He is constantly told he isn't intelligent—by both his own father and Summer—but Freddy and Dewey both think that he's intelligent in a different way, and that Freddy's father just doesn't see that. Must play drums onstage.

Katie (Bassist) Vocal Range (A3-D#5): Katie is a quiet, serious girl who keeps mostly to herself. She plays the cello at school but is quick to pick up the bass at Dewey's encouragement. She is stone-faced when she plays, and takes her instrument and the band very seriously, although not as much as Summer takes managing. Must play bass onstage.

Lawrence (Keyboardist) Vocal Range (A3-D#5): Lawrence is an unconfident boy and is also gluten intolerant. He initially believes that he isn't cool enough to be a part of the band, but Dewey is able to convince him that he's amazing. Must play keyboard onstage.

Tomika (Vocals) Vocal Range (A3-G5): Tomika transfers to Horace Green after being accepted off from the waiting list. She is shy and doesn't speak to anyone at school and feels as though she's not as intelligent as the other students. However, it turns out that she is a highly gifted singer, and becomes the secondary singer in School of Rock, behind only Dewey.

Marcy and Shonelle (Backup Vocals) Vocal Range (A3-G5): Shonelle and Marcy are quieter girls who tend to blend into the background. They are School of Rock's backup singers, and talented dancers. (Their film counterparts are Alicia and Marta.)

Billy Sandford (Stylist) Vocal Range (A3-D5): Billy is a flamboyant and artistic with a love of style and fashion magazines. He is disgusted with Dewey's outfit choices, and how no one else in the band shares his artistic vision but is confident in his styling choices regardless.

Mason Ward (Techie) Vocal Range (A3-D5): Mason is a super-smart, nerdy, tech-savvy boy who designs all the lighting and special effects for the band using his laptop. (His film counterpart is Gordon.)

James (Security) Vocal Range (A3-D5): James becomes the band's security guard. During rehearsals, Dewey has him stand near the door, and if James sees anyone potentially who might blow School of Rock's cover, he has the job of alerting the rest of the band so they can hide the instruments. (His film counterpart is Frankie.)

Sophie and Madison (Roadies) Vocal Range (A3-D5): Sophie and Madison are School of Rock's roadies, but, since the band doesn't go on tour, they are essentially backup dancers. Each girl is a talented dancer, and they can often be found together, much like Marcy and Shonelle. (Their film counterparts are Eleni and Michelle.)