<P> Set in Austin, Texas, the series follows a group of rule - abiding students who learn to take risks and reach new heights thanks to substitute teacher Dewey Finn, a down - on - his - luck musician who uses the language of rock and roll to inspire his class to form a secret band . Throughout the school year, these middle - school classmates find themselves navigating relationships, discovering their unknown talents and learning lessons on loyalty and friendships . </P> <Ul> <Li> Tomika (Breanna Yde) is a 12 - year - old schoolgirl who is best friends with classmate Summer . She plays the electric bass and is also the lead singer in the band . </Li> <Li> Freddy (Ricardo Hurtado) is a 12 - year - old schoolboy who is considered the most handsome guy in his class and is best friends with classmates Zack and Lawrence . Unbeknown to him, one of his classmates, Summer, has a huge crush on him . He plays the drums . </Li> <Li> Summer (Jade Pettyjohn) is a 12 - year - old schoolgirl who is best friends with Tomika and has a huge crush on Freddy . She plays the tambourine . </Li> <Li> Zack (Lance Lim) is a 12 - year - old schoolboy who is best friends with Lawrence and Freddy . He plays the electric guitar . </Li> <Li> Lawrence (Aidan Miner) is a 12 - year - old schoolboy who is best friends with Zack and Freddy and is considered the smartest kid in his class . He plays the electronic keyboard . </Li> <Li> Mr. Finn (Tony Cavalero) is the new substitute teacher and an ex-rock musician who teaches the kids how to play and work together as a band . In the second season, he is promoted to a regular teacher . </Li> <Li> Principal Mullins (Jama Williamson) is the principal of the school . In the first season, she is a recurring character, but is promoted to a main character in the second season . </Li> </Ul> <Li> Tomika (Breanna Yde) is a 12 - year - old schoolgirl who is best friends with classmate Summer . She plays the electric bass and is also the lead singer in the band . </Li> <Li> Freddy (Ricardo Hurtado) is a 12 - year - old schoolboy who is considered the most handsome guy in his class and is best friends with classmates Zack and Lawrence . Unbeknown to him, one of his classmates, Summer, has a huge crush on him . He plays the drums . </Li>

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